FOSSIL BOVIDAE FROM THE LIMEWORKS QUARRY, MAKAP ANSGAT, POTGIETERSRUS By L. H. WELLs* and H. B. S. CooKE** ABsTRACT A short history of palaeontological work in the Makapan Valley is given and the setting of the fossil material is briefly described. Many hundreds of bovid cranial and dental fragments have been recovered, in addition to thousands of bones and bone fragments. The post-cranial material is not considered in the present account. The collection includes a number of species not separable from the living kudu, nyala, eland, Cape buffalo, blue duiker, mountain reedbuck, gemsbok, sassaby, brindled gnu and impala. Known extinct species include cf. Alcelaphus robustus, cf. Pelorocerus helmet and Oreotragus major. A new genus of aberrant Alcelaphine is described as M akapania broomi. Other new species are Cephalophus pricei, Redunca darti, Gazella gracilior, and Phenacotragus vanhoepeni. A feature of the assemblage is the tendency for species to be larger than their living counterparts. The whole described fauna of the deposits is discussed and it is considered that a lower Pleistocene (prob.ably Villafranchian) age is most likely. HISTORY The occurrence in the Makapan valley of consolidated bone-bearing cave deposits was first mentioned by Dart in 1925 and some specitnens were collect,ed by him two years 'later at a site now known as the "Limeworks Quarry". In 1937 Broom descri!bed a dwarf buffalo "Bos" makapani from a cement~ed bone breccia on the opposite side of rhe valley and this location has come to be ca·lled "Buffalo Cave". A year later Van Riet Lowe (1938) drew attention to further sealed cave deposits nea:r the head of the valley, adjoining an open cave associated with historic incidents. One of 1jhese deposits comprises banded layers of coloured ash "and bat guano, containing Middle Stone Age artifacts, and it was named the "Rainbow Cave"; the ovher deposit contains Earlier Stone Age (hand-axe) tools and shows a basal ash and guano layer which .led to the ·name "Cave of Hearths". Additio~al sites have also been found in the valley and their relative positions are shown in the accompanying map (Fig. 1). In 1945 and 1946 senior students and staff from the Department of Anatomy of the M~edical School in Johannesburg collected fossil material from dumps of waste at tthe Limeworks quarry. Several extinct species were recognised, some of them new, Cl!nd it was reaHsed that the fauna had affinities with that of the australopithecine· bearing cave breccias of the Sterkfontein ar~ea. Accounts war~ published describing some of this material ajnd dea1th with Primates (Broom and Jensen, 1946; Mollet, 1947; Kitching, Wells and Westphal, 1948, Suidae (Dale and Tobiansky, 1947; Dale 1948) , Giraffidae (Cooke and Wells, 194 7) and a rodent mole (Broom 1948) . * Department of Anatomy, University of Cape Town, Rondebosch, C.P. ** Department of Geology, University of the Witwatersrand, Johannesburg. 1 N 0 .Y2 I mile I j /. ·-· , -·-­-·-·-·-·-·-·-·-·-·-·-·-·-·-· . . DE' J-JOOP .[)£' KEY -·- FARM BOUNDARIES ...-< STREAM VALLEYS =MAIN ROAD :::: FARM ROADS ··"'"''·· CLIfF rACES • CAVE SITES rig. 1-Plan of Makapan valley showing location of main sites. (Based on survey by H. B. S. Cooke 1939, 1947 .) A paper on the Bovidae was presented to the Royal Society of South Africa by one of us (L.H.W.) in 1947, but it was withdrawn for revision in the light of a rapid increase in the quantity of material collected. Archaeologica~l excavations began at the Cave of Hearths in 1947 with the aid of funds provided by Dr Bernard P·rice and in the following year a human mandible was recovered (Dart 1948 e). The availability of a base camp in the area facilitated work on the waste dumps at the Limeworks quarry and in 1948 were recovered an australopithecine occiput (Australopithecus prometheusj Dart 1948 a, c) and, subsequently, an adolescent mandible (Dart 1948 b, d). Excavations at the Cave of Hearths stopped at the end of the 1949 winter season and were resumed only in 1953 with funds made available by the Wenner-Gren Foundation. At the Limeworks, however, sorting of the dump material has been continued each winter season (except in 1952) and additional australopithecine fragments have been described (Dart 1949 a, b, c; 1954; Bone, 1955). Some further accounts have appeared of baboons ('Broom and Hughes 1949; Kitching 195 2, 195 3) . New descr~ptions also include a chali­ cothere ·(George 1950), a klipspringer (Wells 1951), a hippopotamus (Kitching 1951), ca·rnivores (Toerien 1952, 1955), hystricomorphs (Greenwood 1955) and hyracoids ( Churcher 1956). At present, the baboons are being re-considered by Freed.., man (1955) and the carnivores and Suidae are under review by Ewer. GEOLOGICAL SETTING The general physiography of the Makapan valley has been described by Barbour ( 1949 a, b) and its geology by King ( 1951) with additional d·etails furnished by Van Riet Lowe (1938, 1943, 1948), Bosazza, Adie and Brenner (1946), Cooke ( 195 2) , Dart ( 195 2) and Oakley ( 1954 a, b) . HaughhtJon ( 194 7) has discussed the cave breccias in general. King provides an excellent factua'l accoun~ of the sequence of deposits observed at each of the major sites. He gives a geological map of the upper part of the valley and sketch plan of the Limeworks site. While his descriptions cannot be questioned, his interpretations cf the successions and his correlations are subject to dispute. His conclusions differ from those of Barbour ~nd have been criticised in some respects by Robinson (1952). Like those of the Sterkfontein area, the original caves (now lar.gely represented only by the cons·olidated fillings) were formed :by solution in do'lomitic iimestones of the Transvaal system, some of them selectively aiong old crush zones. Such caves tend to follow in depth the shallow southerly dip of the bedding planes of this formavion. Before the caviti.es became opened to the ~urface, travertines or drip­ stones of rather pure ca:lcium carbonate were formed on the floor, waHs a11d roof of the cavern. As an opening to rhe surface developed and grew in size, increasing amounts of detrital soi:l, wind ... blown dust and other material were carried in. Thinning of the retreating roof or lip of the cave ultimately led to the development, in many cases, of a covering of collapsed rock breccia or rubble. The detrital material has 3 been cemented to a greater or lesser degree by the infiltration of calcium carbonate.* At some loca:lities continued erosion has led to secondary cavernation of deposits of the first cycle, followed bz a subsequent cycle of infilling. Complete rernoval of the original cave roof and surface erosion of the already cemented cave deposit is characteristic of the older sites. As this general cycle is largely inherent in th~ process of cavern formation and fHling, it is clear that similC1r lithological sequences of detrital cave deposits may vary widely in age. The age is controlled to a great extent by ( 1) the moment at which a surface opening developed and ( 2) the rat·e of introduction of detritus, which is likely to begin slowly and increase in tempo. While the cave opening is small, the "cave climate" must exert a considerable influence on the character of the deposit but the detrital material introduced reflects in its physical state the impress of the external or regional climate. Tedious nineralogical and ana~ytical studies being pursued by Brain at the Transvaal Museum, Pretoria, are yielding most interesting resu'lts and promise to prov.~de a valuable tool for use in correlation together with the palaeontological evidence. Detailed results are unpublished but a brief note has appeared recently (Brain, Van Riet Lowe and Dart 1955). Except in the case of the Historic Cave, the deposits have come to light as a result of the activities of lime workers, who sought and mined the valuable basal travertine deposits. The travertine is almost pure calcium carbonate whereas the parent limestone is highly dolomitic and of little commercial value. In consequence of these mining activities, ~he original cave fillings were undercut by gaHeries and stopes so that access to the deposits at the present day is normally gained from these workings below the detrital filling. At the Makapan Limeworks, the lime-seekers fortun~tely discarded much of the material which lay above lihe pure basal travertine because it was contaminated with introduced sandy material. The waste dumps of sandy limestone and cemented detritus have thus proved a rich source of fossil bone, though many valuable specimeas must also have gone to the kilns. With very few exceptions the fossils previously described (and also nearly all those discussed in the present account) ha:ve come from the dumps at the Limeworks quarry and their horizons of derivation in the deposit cannot be determined precisely. Certain information can be deduced from the matrix material. A simplified plan of the L:meworks quarry area !s given in Figllre 2. A road separates the northern area of dumps and old kilns from the open quarry and underground galleries. Entrance to the workings i·s usuaHy gained from the western open cutting. The first part of the inner gallery js roofless and has a northwestern wall of crudely stratified red or pink sand with bones visible in the lower part. * King's suggestion of consolidation due to recrystallization of original calcite dust is here regarded as improbable. 4 TN A Brown breccia with lorqe blocks Brown brecc io with pebble bonds Coone pink breccia Grey mort Stratified pink or red breccia Travertine Dolomitic· limestone .......... , ...... ' HUTS --- sea level Fence Op~n quarry Und~rground workings Dumps B Fig. 2-Simplified plan of the Makapan Limeworks site and a North-South section illustrating the geological succession of the fossil-bearing deposits. In the plan, 1 is the western quarry, 2 the eastern quarry and 3 a quarry and cave known as the HHorse mandible Cave". (Based on surveys by H. B. S. Cooke 1939, 1947 and A. R. Hughes 1948.) 5 6 The or~ginal floor travertine has been removed almost entirely leaving the old filling overhead (Figure 3). Resting on the old travertine was a manganous layer of mixed travertine and very fine pink sand. This give-s place to stratified pink or red breccia with occasional dark bone fragments and is then overlain, after a variable distance, by a grey layer of cemented marl rich in bone, sometimes actually in contact wirh the cave roof. This grey layer is considered to be the main fossil­ bearing horizon and its richness is probably due to the vet y slow rate of accumulation of introduced sediment. The floor of the old workings descends southward and the grey layer rises somewhat on the western wall so that it lies far above the present art:ficial floor. Eastwards, the grey layer dips sharply above the old floor and vanis'hes below a large cone of fallen brownish-red sandy breccia (Fig. 4). In this (southern) portion of the cave system, the grey layer is overlain by several feet of slight! y coarser and sandier pink breccia with a good fauna. Collapsed blocks of travertine, presumably fcrllen from a thinning roof, lie in the upper part of this zone. Overlying it is the coarser brownish-red sandy breccia which forms the recently collapsed cone. This material contains wea~hered pebbles and gravel from w~ich dubious artefacts of extremely primitive character have been recovered (Brain, Van Riet Lowe and Dart, 1955). Brain regards this brownish-red material as a part of the normal succession and hence as a direct continuation of the grey breccia. While this is proba:bly the case, the browner material might- possibly represent a later filled-in sink-hole. Detailed study of this question is awaited but, in the me2n time, the stratified pale pink breccia is regarded as locally the oldest; the coarser red breccia with dark bone is considered to be its direct successor, followed by the main fossiliferous grey layer, while the browner deposit is thought to be at least a little younger and possibly a good deal younger. However, the total time span covered is probably limited. The grey layer is rich in bone and is the source of most of the fossil material recovered; the red or pink zone contains only a modest qu1.ntity of material; the bvowner material is scarcely studied and there is considerable uncertainty regarding the reference of dump material to this zone. Fig. 3-View of the stratified pink and red sandy breccia with dark bones, resting on remnants of floor travertine, the mining of which prqduced the gallery. Photograph taken from dolomite hummock near centre of section AB of Fig. 2, looking towards A. Fig. 4-Cone of collapsed brown breccia, containing weathered pebbles and gravel in its lower portion. On the left of the picture is the downward-projecting solid mass of cave deposit shown in the centre of the section in Fig. 2. ' CLAssiFICATION AND NoMENCLATURE Various classifications of the Bovidae have been put forward by numerous authors, notably Schlosser (1925), Schwarz (1937), Pilgrim (1939) and Simpson (1945). Simpson degrades the sub-families of most authors to the more reasonable rank of tribes, recognising thirteen and grouping them into five subfamilies as follows :- Subfamily BOVINAE: Tribes Subfamily OEPHALOPHINAE: Tribe Subfamily Hl'PPOTRAGINAE: Tribes Subfamily ANTILOPINAE: Tribes Subfamily CAPRI1NAE: Tribes Strepsicerotini Boselaphini 'Bovini Cephalophini Redunc~ni Hippotragini Alcelaphini Neotragini Antilop:ni Saigini Rupicaprini Ovibovini Caprini Although this classification may be subject to minor objections, it is simple, essentially reasonable and is adopted here. Neither the recent fauna of southern Africa nor the fossil assemblage from the Limeworks quarry includes any Caprinae* or Boselaphini. --Of the remaining eight tribes, at least one representative of each has so far been identified in this fossil assemblage. For t:he nomenclature of recent genera and species, Allen's "Checklist of African Mammals" ( 1939) is followed in the main, subject to such modification as is required by Simpson's classification. For the fossil species from Africa, the list given by Hopwood and Hollyfield ( 1954) serves as a useful guide. In descril,ing the teeth, the terminology used by Pilgrim (1939) is employed in preference to the Cope­ Osborn nomenclature. The abbreviations I, C, P and M will be used to indicate incisor, canine, premolar and molar teeth respectively~ the prefix D is used for decidious (milk) teeth and the prefixes R and L indicate the right and left jaws. In the paper communicated to the Royal Society of South Africa in 1947, :1 number of new names were prop?sed. Although these names were given in a circulated abstract, they were unaccompanied by any description and are here regarded as nomina nuda. The earlier names are entirely superseded in the present account. * Two extinct African genera (Pultiphagonides and Pelorocerus) assigned to the Caprinae by Hopwood and Hollyfield (1954) belong in reality to the Alcelaphini (vide infra). 8 SYSTEMATIC DESCRIPTION Subfamily BOVINAE Tribe Strepsicerotini S trepsiceros cf strepsiceros (Pallas) A number of partial upper and lower dentitions cannot be separated f1om the living kudu, though many of the teeth lie at or above the upper limit of size variation noted in living material. The best specime·n (M 2) * is a right maxillary fragment wi~h P4 - M 3 and part of P3 in advanced wear. The intact teeth measure 82 mm, the length of the three molars being 69 mm. These measurements correspond exactly with those of a male kudu skull in the Transvaal Museum. The anterior and middle external folds of the molars are very reduced so that they lie practically flush with the face of the lobe behind them. In correspondingly worn teeth of the living kudu, these folds are also reduced, though not to quite ,rhe same degree. Simila·r reduction is a:lso apparent in a more worn third molar, 26 m·m in length, which occurs in a lmaxtHary fra:gment rogether with part of the second molar. A · well worn upper right dentition is a good deal larger, the three premolars having a combined length of 52 mm and the three molars a length of 77 mm compared with 44 mm and 71 mm in the largest living specimen studied. The folds are more norma'l in 'this specimen (M 3) . Also assigned to this species are: a partial palate with well-worn RP3 - RM1 and LP4 , LM1 and part of LM2 ; half a dozen isolated upper teeth; five ·mandibular fragments with one or two teeth in each; five loose lower molars; and a partial left lower jaw of a juvenile wivh DM·2- DM4 and parts of M1 and M2, the fatter ~till in alveolus. This last specimen (M 4) belongs to the collection made by Dart in 1927. The back half of a skuH, broken across in front of the orbits, shows no trace of horns and agrees closely with the skull of the female kudu, except that the width across the mastoid region is greater than in living material. This specimen (M 1111) is filled with firmly cemented fine bright pink silt a-nd the bone is unusually dark, suggesting that the specimen did not come from the usual grey breccia. A frontlet with a cavity for the right hom core and with a much damaged hind portion of the left core resembles the kudu in size and erection of the horns but the condition of the specimen (M 1112) prevents more exact comparison. A large fragment of ·rhe back part of a skull (M 555)., though badly damaged, agrees in all essential features with the corresponding portion of the skull of a recent kudu. It is therefore placed tentatively in this group. * Specimen number in the catalogues of the Bernard Price Institute for Palaeontological Research, Johannesburg. 9 Strepsiceros (Tragelaphus) cf angasi (Gray) Four partial upper dentitions, a loose RM2, two part~al lower jaws, a few loose lower molars and three fragments of hom core cannot at present be separated from the living nyala, though the fossil is somewhat larger. The best upper series is a right maxillary fragment with moderately worn M1 - M3, 55 mm in length (M 5), compared with 52 mm in the largest specimen available for comparison. A good lower left jaw has P4 - M3 in fairly early wear (M 6), the premolar being 16 mm long and the molar series 64 mm, compared witJh 14 mm and 58 mm in the living species. These dimensions thus exceed the observed upper limit of variation in the nyala and are comparable with typical material of the mountain nyala (T. buxtoni). The lower molars all show a moderately well-developed external basal pillar, strongest in M1 and weakest in M2. The three horn core fragments represent the tip, upper median and basal parts of at least two different horns. The somewhat triangular cross-section and spiral keel characteristic of this group are clearly shown. The siz.e of the basal portion is about normal for the nyala and smaller than in the mountain nyala. Arambourg (1941, 1947) described an extinct specie~ Tragelaphus nakuae from Omo which he regarded as related to the bongo. Both the teeth and the horns of the Orne form are larger than is the case with the Makapan material and specific identity seems improbable. Taurotragus cf oryx (Pallas) Remains not at present distinguishable from the existing eland are fairly plentiful, though a feature of the material is the youth of the individuals repre.sented. The most considerable specimen is a right maxillary fragment with DM2 - M2, lacking the outer walls of all the teeth except the last. Three other maxillae (two right and one left), carry DM2 - M1 and there are five fragments with milk teeth only. One partial right palate possesses M 1 and M 2 ; a dam~ged left maxilla (M 7) has P 4 (unworn) , M 1 and M 2 • There are also a piece of left maxilla with P 2 and P 3 in moderate wear and 'Some half dozen isolated upper molars in varying degrees of attrition. The upper permanent ·molars correspond exactly wit:h those of T. oryx in size and in the broadly rounded form of the medial lobes. In the isolated upper teeth the strong folds and weak ribs of the external wall are ideQtical in development with those of the living eland. A feature of the upper permanent molars which is not common in T. oryx is the presence in M 1 and sometirr1es in M 2 of a weak basal pillar extending as much as half the height of the crown. In the upper milk molars the basal pillar is rudimentary. Two left mandibular fragments, with DM2 - DM-± and DM,2 - M'2 respectively, can also be assigned to this species. A jaw fragment with P3 and P-± and two isolated unworn lower first molars may be included. 10 Tribe Bovini cf Syncerus caffer (Sparrman) A left maxillary fragment (1M 10) with DM2 - M 1 in early wear is cons:derably larger than the remains ascribed to T aurotragus cf oryx, the three milk molars measuring 75 mm as compared with 64 mm in the eland. A right maxillary fragment carrie3 unworn DM3 and DM4 and there are a1so stx isolated milk molars and four first molars of similar character. All are practically unworn. These teeth are further distinguished from T aurotragus by prominent external ribs. DM4 has a well­ developed basal pillar, but this is not continued into a cingulum fold around the medial lobes as is the case in Hippotragus. AHowing for their very early state of wear, these teeth agree with those of the only . juvenile specimen of Syncerus caffer at our disposal. They are actuaUy some­ what larger than the recent dentition, in which the three n1ilk molars measure 66 mm. This is due at least partially to ~he less worn condition of the fossil teeth. The basal pillars of DM4 and M 1 are more slender, and that of M} possibly shorter, in the fossil than in the recent dentition; also there is no rudimentary basal pillar in DM3• These features may prove to be outside tlhe range of variation of S. caffer but the evidence on this point is at present too uncertain to justify specific distinction. A portion of a right mandible (M 15) carries M2 and a damaged and almost unworn M3, the combined length being 74 mm, which is 7 mm larger than -the biggest available living specimen. Two mandible fragments have DM4, unworn, in each. Another piece shows the crown of M1, still unerupted, and there is a fragment of jaw with a slightly worn first molar. Isolated low·er teeth include three complete fourth milk molars, a fragment of one, and a first molar, all unworn. All these · teeth are very simitlar in size and in structure ro the corresponding teeth in S. caffer, though on the whole they tend to be a little larger than in the specimens available for comparison. None of these teeth is large enough to be assigned to H omoioceras bainii (Seeley) or even to "Bubalus'' (? === Syncerus) andersoni Scott. ''Bos makapaani" Broom come3 from a different site in the area and is almost certainly much more recent in age than the Limeworks fossils; it is most unlikely that any of the Limeworks buffalo teeth belong to this dwarf species. Also probably representing the buffalo is a portion of an occiput (M 950) lacking the upper part of the braincase. As is the case with the other large species already considered, a feature of the buffalo material is the youth of the individuals represented. 11 Tribe Cephalophini Cephalophus pricei sp. -nov. Diagnosis: A cephalophine about thirty-five per cent lavger than Cephalophus natalensis and with relatively shorter premolars. Holotype: Left mandible with moderately worn cheek teeth P2- ·M3 (M 18; Fig. 5). Paratypes: Right mandible with P2 - M3 in early l\·ear (M I7; Fig. 5); right mandible with P2 - Ma in advanced wear (M 19; Fig. 5); left mandibular fragment with DM2 - M1 (M 9; Fig. 5); right horn core (1M 478; Fig. 6). Measurements (in mm): Holotype Para types M I8 M I7 M I9 M9 DM2 length 6 DM3 length 8 DM4 length 14 Series DM2 - DM4 28 P2 length 5 7 5! P3 length 8 10 8 P4 length IO I1 10! Series P2 - P4 23 28 24 M1 lengcll II! 12 I2 I2 M2 length I2 I4 I3 M3 length I8 18 19 Series M1 - Ma 42 44 44 Ratio ,p X 100 62.l 54! 55 M 2 Jaw height at P4/'Mt 23 20 23 21 Eighteen lower jaws and jaw fragments resemble closely the living duikers but the teeth are a good deal larger than in the biggest living South African specimens of Cephalophus natalensis (red duiker) or Sylvicapra grimmia (Cape duiker). The fossi'l material is somewhat larger even than the Bay Duiker of West Africa Cephalophus castaneus but is considerably smaller than the Yellow-backed Duiker C. sylvicultor. Comparative average measurements are given in the following tables: 12 • I Cepha- Cepha- Cepha- Sylvicapra lophus lophus lophus Fossil grunnua natal ens is castaneus sylvicultor DM2 length 6. 6 5 7! 11 DM3 length 8 7 61 2 71 2 13 DM-t length 14 11! 91 2 131 2 191 2 Series DM2 - DM4 28 241 2 21 28t 431 2 P2 length 6 61 5l 71 12 2 k 2 P3 length 9 71 2 61 2 8 12 P-t length 101 2 8 8 9 121 2 Series P2 - P4 251 2 22 20 241 2 361 2 M1 length 12 9 8 91 2 13 M2 length 13 101. 2 10 12 171 2 M3 length 181 2 131 2 13 15 23 Series M1 - M3 431 2 33 31 361 2 531 2 Ratio P X 100 581 67 641 67 68 M 2 Jaw height at P4/M1 22 16 15 20 29 In the fossil form t:he average length of the cheek _tooth series is thirty-five per cent. greater than in C. natalensis and twenty-five per cent. greater than in Sylvicapra grimmia. In the living forms premolar length is close to two thirds that of the molars, but in the fossil the molars are proportionally more elongated, the third molar being particularly long. The lower molars are distinguished from rhose of the gazelles by being much lower crowned and shortening very rapidly with wear. They have prominent, tapering, somewhat oblique external lobes which are rounded at the apex. The anterior and posterior internal folds are prominent and persistent but the middle fold soon disappears with wear. There are also well marked internal ribs. In P4 the medial cusp is prolonged forwards to unite with the anterior wing but is separated from the posterior wing by an open valley. This last feature, as well as the relatively low crown, distinguishes the tooth from that of Aepyceros.; in having the medial cusp united with the anterior wing it resembles the red rather than the Cape duiker. T·he anterior premolars, on . the other hand, are less compressed and sectorial than in C. natalensis and more nearly resemble those of S. grimmia. Also in the collection are three hom-cores of duiker-like character. The best $pecimen belongs to the right side (1M 478; Fig. 6). It lacks the extreme tip a.nd 13 -l ·- J M 18 l ~ M 17 M 19 M9 M 21 Fig. 5-Cephalophus pricei. M.18; holotype left mandible with P2 - M3 in moderate wear; M 17: para type right mandible with P2 - M3 in early wear; M 19: para type right mandible with P2 - M3 in advanced wear; M 9: paratype left mandibular fragment with DM2 - M1; M 21: referred partial maxilla with M1 - M3 in early wear. Natural t size. must have been about 85 mm long when complete. It is slightly oval at the base, the elongation being transverse to the axis of t:he skull. The greatest diameter is 18 mm and the least 15 mm. The largest red duiker hom core available is 80 mm long and 12 to 16 nun in diameter at the base; the Cape duiker has horn cores up to 90 mm in length with the base almost circular, having a diameter of 12-15 mm. The fossil core is somewhat stouter than in the red dufker but is very simi:lar in proportions and rises from the frontal bones in the san1e manner and at the same angle. Its resemblance to the horn core of Syfyicapra is less marked and this fact, together with the features of the lower fourth premolar, suggests that the new species be placed in Cephalophus rather tha~n Syrvicapra. l4 L-·-·""'""· ________ j Fig. 6- Cephalophus pricei. Paratype right horn core, M478, facial aspect. Natural size. Subfamily HIPPOTRAGINA·E Tribe Reduncini Probably a:lso to be referred to this new species is a partial rleft maxi·Ha with M1 - M3 in early wear (M 21; Fig. 5). The teeth are low - crowned, ~Vhe almost unworn third molar being ·only 19 mm hi~gh, compared with 25-30 mm in the very similar teeth of the gazelle Phenacotragus vanhoepeni to be described below. The outer wa~lls have strong folds and definite, though weak, ribs. The molar series is 42 mm 1long, compared wit'h 27-28 mm in C. natalensis and 29.30 mm in S. grimmia. Four isolated rhird molars may also belong to this species. Jlhis new species has been named 1n honour of the late Dr Bernard Price. cf Cephalophus ( Guevei) caerulus (Hamilton-Smith) A fragment of right ·mandible with P -1 - M2 in fairly advanced wear is indistinguish­ able from corre~pondi~ng teeth of the living blue duiker. An upper ~left third mo'lar, with part of the ·maxrlla, is also inseparable from thrs species. The fragments constitute the smallest bovid elements of the fauna. Remains of reduncines constitute the most abundant element in the coHection, fairly closely rivalled by the gazelle Phenacotragus. There are about fifty partial skulls and hom cores, twenty palates or maxillary fragments, thirty loose upper molars, fifty lower jaws or jaw fragments and twenty isolated lower molars. Two species are clearly pres·ent, one being very similar in size to the reedbuck R. arundinum but at least specifically distinct while the other is sufficiently close to the mountain reedbuck R. fulvorufula not to justify separation. The latter is relatively rare. It was. thought, at first, that vhe smaller horn cores and skull represented merely young individuals of the larger species but this possibility has been excluded for reasons which wiH be given below. 15 - I· I ( ['' . ...... l 0\ t [, j' r i 0 Scm I I I I Fig. 7-Redunca darti. Holotype frontlet, M 446, facial and left lateral aspects. Two-thirds natural s1ze. / _j Redunca darti sp. nov. Diagnosis: A reduncine the size of Redunca arundinum but possessing more massive horn cores with a distinct! y sigmoid profile. Holotype: A frontlet with well-preserved horns (M 446; Fig~ 7). Paratypes: A brain case and occiput with one hom core (M 447); a damaged sk~ll lacking braincase and horns but with palate and teeth (M 690; Fig. 8). The frontlet (M 446) belongs to an adult male animal and the horn core3 are nearly complete, only the extreme tip being missing in the left core and a few centimetres lacking on the right core (Fig. 7). Compared with the horn cores of R. arundinum, those of the fossil are massive and relatively short; their total length measured on the anterior curve cannot have exceeded 150 mm. At their bases the cores are oval in cross-section with a maximum diameter of 44 mm and minimum of 36 mm; the long axis is directed obliquely backward and laterally. The cores diverge at an angle of about 60° and rise abruptly from the frontals instead of sweeping back at an acute angle almost parallel to the skull surface as in R. arundinum. In profile they have a distinctly sigmoid curvature, the massive basal portion being convex anteriorly and the tapering upper portion concave anteriorly. The horns of R. arundium have a simple anterior concavit/ and those of R. fulYorufula are almost straight. The braincase (M 447) has the occiput and pterygoid region well-preserved. The block from which the specimen was recovered was broken across at the base of the hom core, which was almost detached and has had to be reinforced. In form it resembles the holotype frontlet very closely and specific ·:dentity appears certain. The occipital crest is higher above the foramen magnun1 than in R. arundinum, giving a slightly different appearance to the nuchal view. In the living species the braincase of the male has a maximum width of 73-81 mm; in this fossil specimen the breadth is 84 mm. In two other specimens, the width of the braincase is close to 80 mm. The skull lacks most of the braincase and the nasal region but the palatal aspect is almost complete (M 690; Fig. 8), except for the loss of the snout and some damage to the crests formed by the pterygoid process of the sphenoid and palatine bones. The left bulla is missing and there is ~orne damag~ in the mastoid region and to the zygomatic arches. The occiput and pterygoid regions agree in every way with the corresponding portions of the brain case specimen described above and there is no doubt that both belong to a single species. The upper aspect of the skull appears very incomplete owing to the lack of the braincase and nasal region. Parts of the malar and lacrimal bones are present on both sides. The anterior parts of the nasals are preserved and they show the flattening so characteristic of Redunca. In all dimens~ons, the skull agrees very closely with R. arundinum. Both sides of the palate carry M 1 - M 3 in moderate wear. The teeth are very similar to those of the reedbuck but are a little wider. 17 Fig. 8-Redunca darti. Paratype skull, M 690, palatal aspect. Natural size. 18 An excellent palate (M 24; Fig. 9) shows the entire set of cheek teeth on both sides, agreement with the teeth in the skull being most exact. Comparative measure­ ments are given below:- Para type (M 690) Palate (M 24) Left Right Left Right P 2 length 7! 7 est P 3 length 9 9 P 4 length 9! 91. 2 Series P 2 - P4 26 251. 2 M 1 length 13! 14 13 13 M 2 length 15 15 16 16 M 3 length 17 17 171. 2 17 Ser~es Ml - M3 451. 2 46 461. 2 46 Ratio P X 100 56 551 M 2 P2 is somewhat larger than in the reedbuck and tbe cheek teeth are relatively and absolute! y broader than in R. arundinum. In this respect there is some resemblance to the puku and, in fact, the fossil gives the impression of being in some respects intermediate between the puku and the reedbuck. The molar teeth have their inner lobes more rounded than in either puku or reedbuck, itJ. both of which there is a slight kink as if the lobe had been gently pinched n~ar its tip. In the plentiful additional material available no significant variation either in size or in pattern of the upper teeth has been observed. Four lower jaws have been selected from the abun~dant collection to illustrate the lower dentition of the new species. The teeth are closely similar to those of R. arundinum but, as with the uppers, they lie at the upper limit of size variation of the living form. The dimensions of these four specimens are given below and they are shown in Fig. 9. DM2 length DMs length DM4 length Series DM2 - DM4 M. 27 M. 26 M. 25 M.948 --'- L. (juvenile) L. (early wear) R. (moderate) L. (advanced) 6* 9!* 17 32 19 M. 27 M. 26 M. 25 M.948 L. (juvenile) L. (early wear) R. (moderate) L. (advanced) P2 length 61. 2 7* 7 est P3 length 10 10* 8 P4 length 12 111* 101 2 2 Series P2 - P-± 281 2 27 251 2 Mt length 15 151 2 13* 111* 2 M2 length 161 2 15 15* M3 length 21 191 2 21 Series M1 - M3 53 47.1. 2 47 Ratio P X 100 54 57 54 M He:ght of jaw at P4/Mt 24 26 24 26 * overlapping Amongst the remaining material referable to this species is a good braincase with both the occiput and one hom core well preserved. The specimen (M 494) is curiously associated with a very good frontlet of the gazelle Phenacotragus vanhoepeni. Most of the remaining hom cores lack the extreme tips but it can be seen that the sharp curvature of the upper part of the core is characteristic. There are a few imperfect cores of juveniles and in these also the curvature is apparent. It is noted in the living R. arundinum that youthful specimens already possess the curvature exhibited at the tip in the adult form, though not always so markedly and it thus seems reasonable to exclude from R. darti the few shorter horn cores which correspond so closely in their almost straight character with the normal horns of R. fulvorufula. From the West African bohor R. redunca, the fossil species ~differs in the massiveness and anterior convexity of the horn cores, and also in the greater actual length of the molar series and relative reduction of the premolars in R. darti. The fossil species R. ancystrocera, described by Arambourg (1947) from the lower Pleistocene Omo beds of southern Abyssinia, has simply curved hom cores resembling those of R. arundinum but being considerably longer. The only other extinct reduncine recorded from South Africa is "Kobus" venterae Broom from Florisbad but this i:s larger than R. darti and has very widely divergent horns. In some respects the Makapan fossil resembles the Puku (Adenota vardoni) but these two species cannot be placed in the same genus unless the Puku is to be separated generically from the Kobs. Failing this, the fo:;·sil species is better retained in Redunca. The specific name is given in honour of Professor R. A. Dart, who initiated the exploration of this remarkable site. 20 M 25 M 948 I . 1 l 1 Fig.9-Redunca darti. Referred dentitions. M 24: palate with cheek teeth in moderate wear; M 27: left mandibular fragment with DM2 - M1; M 26: left mandible with P2 - M3 in early wear; M 25: right mandible with P2 - M3 in moderate wear; M 948: left mandible with P3 - M3 in advanced wear. atural size. 21 Redunca cf fulYorufula ( Afzelius) In addition to seven partial horn cores, the collection includes a frontlet with part of the braincase and both horns (M 465) , all of which are very similar to the living R. fulYorufula. The right core of the frontlet is complete, except for the extreme tip, but the left core lacks the top one third. The horns are nearly straight and cannot be assigned to R. darti, especially as sutures suggest an adult individual. The deep sculpturing of the frontal bone below the supraorbital foramen is notable in the specimen (Fig. 10) and is characteristic of Redunca. Similar features of the Fig. lG-Redunca cf fulvorufula. Frontlet, M 465, facial aspect. Natural size. 22 face are shown in another specimen (M 507), which is a hornless female. The braincase and occiput are well preserved and agree closely with material of the living species; possibly the fossil is a little larger than is usual. The pres·ence of a reduncine which is not R. darti is confirmed by a piece of right maxilla and palate with P 4 - M 3 in moderate wear (M 28). The follow~ng are the lengths of the teeth: P 4 === 8! mm; M 1 === 12! mm; M 2 === 12! mm; M 3 === 13 mm; P 4 - M 3 === 46! mm; M 1 - M 3 === 38 mm. These dimensions and the pattern of the teeth conform closely to R. fulYorufula. There are also two isolated upper third molars which appear to belong to this species. Tribe Hippotragini cf Oryx gaz.ella (Linnaeus) lc Five specimens in the collect~on are hippotragine in form and cannot be separated at present from the living gemsbok. The best specimen is a portion of left maxilla with M 2 and M 3 in moderate wear (M 34). The teeth are respectively 30 mm and 29 mm long, which is slightly larger than in iiving examples. An internal basal pillar rises to the crown in M 2 and half way up the side in M 3• Two worn upper right third molars also belong here and a 1noderately worn right lower first molar (M 8) 30! mm long and 29 mm high agrees also with lower teeth of the gemsbok. Tribe Alcelaphini Damaliscus sp. ( aff albifrons) A frontlet with the bases of the two horn cores (M 781 ; Fig. 11) indicates the presence of a Damaliscus which resembles the living blesbok but d~splays features which might be regarded as excluding it from that species. In the fossil the bases of the horn cores are strongly oval and measure 33 ·mm and 45 mm across their minor and ·major axes compared with 31 by 43 mm in a large Hving blesbok. In the fossil form tile better preserved (right) core shows a rapid upward taper and at a he~ght 75 mm above the base of the rugose core, th~ dimensions are reduced to 17 mm by 29 mm; in a typical living specimen at the same height, these dimensions are 18 mm by 31 mm; thus the base is a little larger and the taper is more abrupt in the fossil than in the living form. In the living species the axis of elongation makes an angle with the median line of the skull very close to 4 5° ; in the fossil this line is more strongly transverse and approaches 60 °. The spiral twisting of the core is sharper in the fossil than in the living form. The pedicle at the· base of the horn is also stouter and less elevated in the fossil specimen. The inference is that the horns of the fossil resemble those of the blesbok but are shorter, taper and twist ·more abruptly and stand on a wider, stouter and low·er .frontlet. A partial braincase and occiput (M 510) is typically ~Damaliscine in form but is rather more massive, having a very heavy occipital condyle and higher occiput 23 than the living blesbok. As the frontlet suggests a more robust skull, the occiput probably belongs to the same species. Two upper third molar teeth resemble those of the blesbok very closely and are comparable in size, as also is a right lower jaw with P 4 (erupting below a fragment of DM4), M1and M2 being in early wear (M 778). cf Gorgon taurinus (BurcheH) A fair number of partial dentitions and isolated upper and lower cheek teeth agree very closely with those of the living brindled gnu. The best specimen is a partial palate with well worn LM1, LM2 , RM2 and RM3 (:t\1 857). At the front lobe of M 2 the palate is 58 mm wide and the lengths of the individual teeth are : LM1 === 21! mm; LM2 === 25! mm; RM2 === 26 mtn; RM3 === 22! mm. The best lower jaw (M 858) belongs to the right side and there is a less complete I l l I I ! -~- ~-J Fig. 11-Damaliscus sp. (aff albifrons). Frontlet, M 781, facial aspect. Natural size. 24 fragment of the left side which is probably its mate. In both specimens P3 - M3 are preserved and M1 - M3 has a total length of 69t mm. Five other partial lower jaws, three partial upper dentitions, a dozen loose lower molars and three dozen isolated upper molars may also be assigned to this species. There are, in addition, a number of juvenile dentitions which cannot with Cef~ainty be distinguished from those of Makapania broomi, which is described below. cf Alcelaphus robustus Cooke Two upper third molars and one lower molar are typically alcelaphine in structure but are larger than the living species. They are shown in Fig. 12 and rna y _ be compared w:th similar specimens from the Vaal river gravels which were named A lcelaphus robustus (Cooke 1949). cf Pelorocerus helmei (Lyle) Three well-worn upper molars of alcelaphine type (Fi6. 12) are even larger than those tentatively placed in Alcelaphus robustus and are closely comparable with teeth previously referred by the present authors to Pelorocerus helmei (Lyle). r ----­ ' I l t I - --s M548 I ~ I I . .. -· . j M 76~ ·,j - - "<- -- j ~-·· . -... >-~.,:·:·~· - ········ ·-·····~·: ..... ~:-~-.. ... :.__:___>··~J Fig. 12-LEFT: cf Alcelaphus robustus. Two left upper third molars (M775, M776) and a lower .right first molar (M 777) RIGHT: cf Pelorocerus helmei. An upper right third molar (M 548), a ·qamaged upper right second molar (M 764) and an upper left first molar (M 765). Natural size. · · 25 Hoffman (1953) provides confirmatory evidence for the size of the teeth of that species but indicates that a related form, wh:ch he regards as generically separate and calls Lunatoceras mirum, has almost identical teeth. The reference of the scanty Makapan material must, therefore, be very tentative at this stage. A left mandibular fragment with the three milk molars in advanced wear (which is one of the specimens recovered by Professor Dart in 1927) clearly belongs to this group. DM4 measures 30 mm in length, con1pared with 25 mm for an equally worn tooth of a large Gorgon taurinus, a ratio comparable with that between Gorgon and Pelorocerus in adult third molars. Hopwood and Hollyfield (1954) have erroneously tncluded Pelorocerus among the Caprinae. It is true rhat in the form of the horn-cores P elorocerus is quite similar to the ex:t~nct genus Pultiphagonides from Olduvai, which Hopwood and Hollyfield also regard -as caprine. Through Dr Hopwood's kindness we have been able to examine the type skull of Pultiphagonides african!-ls Hopwood in the British Museum (Nat. Hist.) ; on dental characters we consider it to be unquestionably a:lcelaphine. There appears therefore no good reason to depart from the view that Pelorocerus is also alcelaphine. MAKAP ANIA gen. nov. Alcelaph~ni of medium to large size, with horns arising close to the posterior orbital margin and directed strongly laterally; teeth hypsodont; upper molars with typically alcelaphine outer ribs and folds but medial 'lobes more V-shaped and resembling those of T ragelaphus; lower molars alcelaphine in structure but with ~lateral lobes more V-shaped. Genotype Makapania broomi sp. nov. Makapania broomi sp. nov. Diagnosis: A Makapania approximately the size of Gorgon taurinus. H olotype: Partial skull with horn cores and part of palate bearing LM3 and part of LM2 (M 162; Figs. 13, 14). Paratypes: (a) Slightly crushed snout (M 163; Fig. 15); (b) Crushed snout and associated portions of mandibles (~M 651 A, B, C, Fig. 16); (c) Portion of right mandible with P2 - M3 (M 655; Fig. 16). The holotype specimen consists of the anterior portion of the brain case, with parts of both hom cores, and the hinder portion of the palate. The facial region is damaged. A low transverse elevation on the roof of the brain case represents the horn­ pedicle of Alcelaphus. The hom cores, which spring from the extremities of --,this elevation, are at first directed somewhat upwards and then pass almost horizonta:lly outwards in the transverse plane; they appear to have been upcurved towards their tips. This form differs both from Alcelaphus and from Connochaetes in having the 26 root of the hom core very close to rhe posterior borx:ler of the orbit. The preserved portion of the more complete (right) hom core measures approximately 17 em in length, and probably at least 10 em of the tip is missing. At its base the core is oval in cross-section, measuring 62 mm in transverse diameter and 48 mm in anteroposterior diameter; at 15 em from rhe base it is nearly circular in section, measuring 3 2 x 3 3 mm. The bony palate is unusual in having its median portion (between the pterygoid plates) prolonged further posteriorly than the lateral portions. L1M 3 and the hinder portion of :UM2 and of RM3 in early wear are preserved. The breadth of the palate between the third molar teeth is approximately 60 mm. The intact LM3 is 28 mm long and 18 mm broad. The peculiar formation of the palate and also the pattern of the teeth in the holotype make it possible to identify with this species a crushed snout with LP3 - M3 in early wear (M 163). Another crushed snout (M 652A) with LM2 and M 3 in early wear also clear! y belongs to this sp~cies and is associated in a single block with damaged left and right mandibles. The right mandible (M 652C) has the outer lobes of the molars rather damaged and only the root of P4 remains. The left mandible (M 652B) has LP3 - M3 well preserved, the premolars being unworn. The upper and lower dentitions are thus definitely associated and it is then possible to identify as belonging to this species a well worn right mandible with P2 - Ms in advanced wear (M 655, Fig. 16). The dimensions of the teeth in these specimens are given below. Measurements of upper and lower cheek teeth (in mm). UPPER LOWER M 162 M163 M652A T.M.t M652B M652C M655 p2 Length 11 p2 Length 10 Breadth 10 Breadth 6 p3 Length 12 14 p3 Length 15 12 Breadth 13-l 2 13 Breadth 8 9 P4 Length 13 14 p4 Length 16 15 Breadth 15 15 Breadth 10 11 Series P2 - P4 39 37 Ml Length 21 25 M1 Length 24 22* 19 Breadth 19 19 Breadth 12 c12* 13 M2 Length 26 26? 27 M 2 Length 26 251. ") 25 Breadth 19 18 19 Breadth 12 c12* 15 M3 Length 28 31 24+ M3 Length 34? 34 36 Breadth 18 19 15+ Breadth 111. ") 12 14 Series Ml - M3 78 84 81 80 t Specimen in Transvaal Museum * Dan1aged 27 N 00 FF'""'"':""'·--:---~""""~~.- r r: t;, L f. r:_, I. X t . y2 Fig. 13-Makapania broomi. Palatal aspect of holotype skull fragment (M 162). One half natural size. On the left are shown the left third molar and partial second molar, natural size. N \0 .. o , ' . .10 em I ea F?3 .k+a es · '. e=J Fig. 14- .1!akapania broon1i. Dorsal aspect of bolo type skull fragment (M 162). One half naturai size. i ,J j i ~ -·---~· Fig. 15-Makapania broomi. Slightly crushed snout of paratype, M 163, palatal aspect. atural size. 30 The most conspicuous feature of the upper molars is the pronounced V-shape of their medial lobes, in which respect they differ from all living alcelaphines. Super­ fic~ally the teeth resemble those of Tragelaphus but are distinguished by being much more hypsodont; the height of the crown of M 2 in specimen M 652 is 49 mm and of M 3 is 56 mm. The extemal folds are strongly marked and the ribs moderately developed, giving ~he outer face of the teeth a typically alcelaphine appearance. As the teeth are worn down, they increase in width much less rapidly than do those of Tragelaphus; the groove between the medial lobes is wider and shallower and there is a large central enamel island. There is no basal pill2 r rising from the cingulum. In ~the rear enamel island, a posterior spur is sometimes present but in the anterior one this is unusual. The upper premolars are small in proportion to the molars, as in Connochaetes and Gorgon, but are relatively a little larger than in the gnus. Similarly, the lower molars differ from those of liv:ng Alcelaphines in having angular lateral lobes. They are distinguished frotn tho~·.e of Tragelaphus by being more hypsodont (M3 in M 652 having a crown height of 57 mm) a~nd by possessing a rudimentary antero-lateral fold or flange. As in the upper molars there is no basal pillar. P 4 is hypsodont and agrees essentially with P 4 in Alcelaphus, Connochaetes and Gorgon; P3 is also hypsodont but of simpler form; P2 is a simple compressed, sectorial tooth. In addition to the type material, there are several other specimens which contribute information regarding the structure of the skull and horns of Makapania. A partial brain case, with the occipital region rather eroded (M 499) possesses the posterior portion of the basal part of each horn core and its generic reference is quite certain. The ·lower edge of the occipital condyles and the basilar tubercles are also preserved. Another specimen (M 952) comprises an occiput with part of the brain case and it seems to agree closely in dimensions and character with the back of the previous specimen. This fragment displays a sharp posterior ridge above the foramen magnum, a feature possessed very markedly al~o by Damaliscus and, to a lesser degree, by Alcelaphus. Three other pa:r:tial skulls a~nd twenty fragments of horn cores attest to the typical character of the holotype specimen. One fragment (M 487) comes from near the tip of the core and indicates a somewhat gnu-like shape in this region, though the curvature is less marked than in either Connochaetes gnou or Gorgon taurinus. Five maxillary fragments with teeth in various stages of wear and some twenty isolated upper molars confirm the features shown in the type. These teeth tend to be slightly larger than those of G. taurinus. Seven lower jaw fragments and more than a dozen isolated lower molars also agree wtth the paratypes but, as the latter are either very worn or relatively unworn, a good specimeu with LP4 - M2 in normal wear is figured here (•M 962; Fig. 16) togetiher with an upper and a lower series of what is believed to be the milk dentition of Makapania. 31 \N N M 95 M 953 ·M 652B M 655 Fig. 16--Makapania broomi. M 954: referred juvenile palate with milk teeth; M 953: referred partial juvenile mandible with LDM4 - M2; M 652B: paratype right mandible with P3 - M3 in early wear; M 65 5: paratype right mandible with P2 - M3 in moderately advanced wear. Natural size. A damaged brain case of a very young individual (M 512) has part of the base of the left horn preserved. This specimen resembles fairly closely a gnu skull of similar age but the frontoparietal sutures are different and would fit well with the probable state in Makapania at thi3 early age. In the collections of the Transvaal Museum, Pretoria, there is a maxillary fragment from the Makapan limeworks, possessing LP2 - M 2 in early wear, which c!early belongs to Makapania broomi. The same species has also been observed in a private collection from deposits in the Sterkfontein area. By the form of its horn cores this antelope could be tegarded as falling between the kongoni (Alcelaphus cokei) and its allies on the one hand and Gorgon taurinus on the other, but it differs from both in ha vi·ag the horns arising close to the orbits. It might therefore be considered as an offshoot from the common ancestral stock of these two types which has escaped specialisation in the origin of the hom core, but has developed its own "pseudo-tragelaphine" specialisation in the molar teeth. This form cannot therefore be assigned to either Alcelaphus or Connochaetes, nor can it be placed in any of the described extinct genera, Pelorocerus (van Hoepen, 1932), Parmularius (Hopwood, 1934), or Parestigorgon (Dietrich, 1950). The upper molars somewhat resemble those assigned by Dietrich ( 1950) to Praedamalis deturi, but the character of the associated hom core is wholly different. Pultiphagonides africanus Hopwood has horn cores of similar character but shorter. It has been mentioned above that Pultiphagonides on its dental characters is certainly an alcelaphine; its molars are almost indistinguishable from those of Alcelaphus. The Makapa·n fossil with its very specialised molars cannot be ass~igned to the Olduvai genus. It has therefore seemed justifiable to create a new genus for which the name MakaPa.ttia appears appropriate; the specific name has been cho~en in memory of ·the ~late Dr ·Robert Broom who contributed so much to our knowledge of the Quaternary mammals of South Africa. Subfam:ly ANTILOPINAE Tribe Neotragini Oreotragus major Wells The collection includes a number of jaws, teeth and horn cores of neotragine type, apparently belonging to a single species. The best representative specimens comprise a fron~let with both horn cores (M 476; Fig. 18), an entire palate wi1Jh P2 - M 3 on ·borh sides (M 951; Fig. 17) and two left mandibles ·wicil a·ll the cheek teeth (M 997 and M 998; Fig. 17). The teeth of the palate are rather worn but a ~left maxilla displays a:H the teeth in early wear (M949; Fig. 17). These remains agree in all essential characters wibh the genus Oreotragus but their dimensions exceed by fifte~n to twenty per cent the limits of the liv:ng 0. oreotragus. A large exci·nct species 0. major was founded upon a skuH from a read breccia deposit at another site in the Makapan Valley (Wells 1951) and the present collection conforms sufficient closely to be referred to the same speci~s. 33 w ~ M -.9 M ···9~·· t Fig. 17-0reotragus 1najor. M 651: palatal view of somewhat crushed type skull from the Swartkrans (Makapan) site; M 949: referred partial left maxilla with p2 - M3 in early wear; M 951: referred palate with cheek teeth in moderately advance·q wear; M 997: left mandible with P2 - Ma in fairly early wear; M 998: left mandible with P2 - M3 in moderately advanced wear. Natural size. Fig. 18-0reotragus major. Frontlet, M 476, facial aspect. atural size. In the type skull only the lower part of the right horr. core was present, the left hom hav:ng been lost. The frontlet poss~esses both horns and the distance from the centre of each core to the median suture is 30 mm, exactly the same as in the type; the horn cores are slightly stouter but three isolated cores agree more exactly with the type. The heights of the left and right cores are approximately 43 and 46 mm respectively. The teeth of the type skull have not been figured and the palatal aspect of the type is illustrated in Fig. 17 for comparison with selected specimens from the Limeworks depo.;it. The following are the relevant measurements (in mm) : . Type Palate (left) (left) p2 Length 9-! Breadth 7-! p3 Length 10 9! Breadth 8 7-! p4 Length 8 8 Breadth 8 7-! Series p2 - P4 27 35 M951 (right) 9-! 8 9 8 8 7-! 26! 2 M949 (left) 9 6.l-2 9 7 8 7 26 M999 (right) &\-2 7 Oreotragus or eo tragus (average) 22j Oreotragus Type Palate M951 M949 M999 or eo tragus (left) (left) (right) (left) (right) (average) Ml Length lOl 2 9.1 2 9 9 10-! 9 Breadth 9.1 2 8 8 8 8 71_ 2 M2 Length 12 11.1 2 11.1 2 11 12 9.1 2 Breadth 9-! 8! 2 8! 2 8.1 2 8! 2 8 M 3 Length Ill_ 2 10 9.1 2 9!est 10! 10 Breadth 8 8 8 7.1 2 71_ 2 7-! Series M l - M 3 34 31 30 29.1 2 33 28! 2 Ratio P X 100 87 88! BE- 79 M The relatively large size of M2 in the fossil material as compared with the living species is noteworthy. In the type skull, only the second and third lobes of the left 'M3 represent the lower dentition. The breadth of the second lobe is 6 mm and the length of the fragment is 9 mm, giving an estimated length for t~e complete third molar of about 14 mm. In shape and size the teeth of the two dozen partial lower jaws conform to the expected dimensions. The lengths of the teeth in the two most complete left lower jaws are given below (in mm) :- M 997 6.\ 9 9.1 25 l 9 10 13 32 78 2 2 I M 998 5 8-! lOl 24 10 10-! 14 34! I 69! 2 l Oreotragus 4 7.! 9 oreotragus 2 20! 8 9-! 12! 1 30 68-! It would appear that vhe type skull lies close to the upper limit of size variation of the species or, alternatively, that the material from the Limeworks deposit represents a slight! y smaller variety or race. Tribe Antilopini Aepyceros cf melampus (Lichtenstein) A portion of hom core (M 654) approximately 8 em in length, shows the characteristic ringing of the impala core (Fig. 19) . As far as can be determined from the curvature it belongs to the central part of the hom. It is larger than the cores 36 in any specimens available but may not lie outside the conceivable limits of variation. A partial right lower jaw (M 759) with well worn Mt - M3 and a fragment of P 4 is ind:stinguishable from living material, as also is a juvenile left lower jaw with DM3 - M3 in early wear (M 758). A number of isolated upper teeth probably belong to this species. +- · "' Fig. 19-Aepyceros cf melampus. Fragment of horn core (M 654) Gazella gracilior sp. nov. Diagnosis: A gazelle somewhat resembling G. rufifrons but with more delicate horns and having Mt relatively larger. H olotype: A frontlet with horn cores, damaged at tlhe tips (M 773; Fig. 20). Paratype: A left lower jaw fragment with P4 (damaged) - M3 (M 767; Fig. 21). . The frontlet comprises part of the parietal bone, the horn cores and the fronta:ls as far as the supraorbital foramen qJ? each side. The horns are fairly close together, the basal separation being 22 - 23 mm, and they rises steeply from the brain case. The heights of the right and left cores as preserved are approximately 60 mm and 70 mm respectively, measured on the inner s:de; the probable height when complete is about 10 - 11 em. The hor:ns curve gently outwards and backwards, the cQndition of the extreme tip being uncertain. In cross-section, the cores are oval with antero­ posterior elongation. The greatest and least diameters at the base are 21! mm and 16! mm for the left hom and 22 mm and 17! mm for the right horn; 4 em higher up, the measurements are 15! mm and 13 mm on both cores. An isolated broken core (M 772) is closely similar in shape and in basal dimensions but tapers more rapidly upwards. In the British Mus·eum (~Natural History) is an inr.eresting specimen from this locality, taken over by Dr K. P. Oakley for exhib~tion. It comprises a right horn core thrust into the marrow cavity of a broken long bone (Fig. 20). 'Dhe tip is 37 w 00 r -.. ··-···~·.-~- Fig. 20-Gazella gracilior. Holotype frontlet, M 773, facial aspect (centre) and left lateral aspect (right); on the left 1s a photograph of a cast of the referred specimen in the British Museum (Natural History.) Natural size. missing and the length of core preserved is 61 mm. The greatest and least diameters .at the base are 25 nun and 19 mm respectively and at the broken tip are 17 nun and 12 mm. It is thus slightly larger than the holotype but is otherwise closely simJar. On the brain case, the suture between the frontals lies on a ridge which passes into a raised area on the anterior edge of the parietal. The horn base above the supraorbital foramen is elevated from the surface of the frontals ~ In the living African gazelles, the horn bases of males are normally oval in ~ection and those of females are more nearly circular. In G. granti, in which the .cores of the male are greatly elongated in section, the females also have rather oval horn cores; but this is exceptional and, in any case, the fossil has horns far too short to belong to the G. granti female. There is thus good reas.on to consider the fossJ frontlet as belonging to a male animal. Parallelism of the two horns is exhibited by G. cuyieri, G. leptoceras, G. rufifrons, G. spekei, G. thomsoni, G. dama and G. granti. The two last named are much too large and the horns of the Dama Gazelle curve too ~harply backwards. Speke's ·Gazelle is of comparable size, though rather larger, but the sharp backward arching .of its horns serve to eliminate it. Of rhe remaining four, the following are average dimensions for the core bases : G. cuyzert 32 x 22 mm G. leptoceras 26 x 19 mm G. rufifrons 27 x 19 mm G. thomsoni 32 x 22 tnm AH are thus somewhat larger than the fossil frontlet. Both G. rufifrons and G. thomsoni show ridging of the fronto-parietal region and the fossil form resembles these two species more closely than it does any other African gazelle; the fossil <:learly had fairly short horns and is more like G. rufifrons in this respect than like the long-horned G. thomsoni. M767 M:766 Fig. 21-Gazella grae1lior. M 767: paratype left mandibular fragment with P4- M3 in moderate wear; M 768: referred left mandibular fragment with P4 - M in moderate wear; M 766: left mandible with P3 -- M3 in advance(\ wear; M 771: maxillary fragment with RM2 - M3 in moderate wear. Natural size. 39 Four lower dentitions (all of the left side) are gazelle-like in form and of the correct size to be associated with the frontlet described above. One of these (M 767; Fig. 21) has been selected as a para type of the species. It has the greater part of P4 preserved and the whole of M1 - M3 in moderate wear. A similarly worn fragment (M 7 68; Fig. 21) has P 4 intact but lacks M3 and a specimen in advance wear (M 776; Fig. 21) has P3 - M3 and the root of P2 preserved. The measurements of these specimens are given below (in nun):- P2 Length Breadth Ps Length Breadth P4 Length Breath Series P2 - P4 M1 Length Breadth M2 Length Breadth Ms Length · Breadth Series M1 - Ms Ratio ·P X 100 M Height of jaw at P4jM1 Para type M 767 9 est 5 12 6! 13 6.1 2 17.1 2 6.1 2 421 2 17 M 768 10 5 12 6 13.1 2 6.1 2 19 est M 766 5!est 3 est 7 4 7! 5 20 est 10 7 12 8 18 7 40 50 18 A right maxillary fragment (M 771; Fig. 21) with M2 and M3 and also an isolated RM3 show typically gazelle-like teeth which may be provisionally assigned to this species. In the fragment, M 2 is 13! mtn long and 9! mm broad and M 3 is 14! ·mm long, 9! mm broad and 18 mm high; the isolated RM3 is 14 mm 1long and 9 nun broad. The table overleaf gives average figures for the dimensions of tee~h in the living gazelles of comparable size. 40 G. cuvieri G. leptocera~ G. rufifrons G. thomsoni Fossil P2 Length 51 2 51 2 5 5 51? 2" Breadth 31 2 3 3 3 3 ? P3 Length 8 71 2 7! 7 7 ? Breadth 4 . 31 2 4 4 4 P4 Length 41 2 4 4 5 5 Series P2 - P4 221 2 21! 201 2 20 21!? ·M1 Length 11 101 2 10 10 11 Breadth 6 6 6 61 2 61 2 M2 Length 131 2 13 121 2 121 2 13 Breadth 6l-2 61 2 7 71 2 7 M3 Length 17 17l 2 181 2 181 2 18 Breadth 6 6 7 61 2 7 Series M 1 - M3 411 2 41 41 41 42 Ratio P X 100 54 52.1 50 49 51 M 2 Height of jaw at P4jM1 17 17 18 19 18 M 2 Length 14 12! 121 2 13 13! Breadth 8 8! 91 2 101 2 91 2 M 3 Length 13 13 14.1 2 15 14 Breadth 7 7! 9 9 91 2 Height 18 17 15 16 18 The closest comparison, both in dime·nsions and in crown pattern, is with G. rufifrons and G. thomsoni. Although it is not emphasised by the average figures, comparison of individual dentitions having cheek teeth of similar overall length shows that Mt in the fossil is consistently larger than in G. rufifrons or in G. thomsoni. In th:s respect it approximates to G. cuvieri but differs sharply in having broader teeth. It thus seems clear that the fossil cannot be identified specifically with the living African gazelles. Of the fossil species hitherto described from southern and East Africa whose horns are known, none is comparable with G. gracilior. The teevh previously described as G. wellsi (Cooke 1949) come close to those in the present collection but identity cannot yet be established. The teeth of G. wellsi appear to be somewhat more hypsodont than in G. gracilior. 41 it Scm I E?3 E?3 I Fig. 22-Phenacotragus vanhoepeni. Holotype frontlet, M 599, facial and left laterial aspects. Two-thirds natl.lral size. Phenacotragus ~~anhoepeni sp. nov. Diagnosis: A Phenacotragus with horns more massive, rising more vertically from the frontal bone and more compressed laterally than in P. recki Sdhwarz. Holotype: Frontlet with both horn cores slightly damaged at the tips (M 599; Fig. 22). P aratypes: (a) Complete brain case with parts of the frontals and lower part of right horn core (M 406). (b) ·Damaged skull with palate but lacking roof of brain case (M 598; Fig. 23). There are a large number of partial skulls and portions of horn cores which belong to an antelope of the gazelle group but differ from the living African species. Many partial upper and lower jaws and teeth belong to a medium sized gazelle and one partial skull furnishes an anatomical link between the upper dentition and the horn cores. In the holotype frontlet (M 599; Fig. 22) the horn cores rise almost vertically from the brain case and their basal porfons diverge slightly. They are sharply recurved backwards, with the terminal portion deflected outwards and upwards. The length of the more complete core, measured along the anterior curve, is 16 em as preserved and is estimated as 20 - 22 em when intact. The basal separation between the cores is 18 mm. The cores are compressed laterally, the greatest (antero­ posterior) diameter being 4 2 mm and the least (transverse) diameter 29 mm; 5 em up from the base the corresponding dimensions are 36 mm and 22 mm; 10 em from the base they are 28 mm and 17 mm, and at the broken t ~p are 17! mm and 12!- mm. The fifty or more other horn cores and fragments confirm that the features shown in the holotype are reasonably typical; the range of variation is small. As in Gazella gracilior, the suture between the frontals runs along a marked ridge and widens into an ·elevated area at the front of the parietal. These cores do not compare at all well with those of any of the exist~ng African species of Gazelle, nor with those of t1he extinct species G. helmoedi van Hoepen. They correspond fairly closely with the horn cores of the extinct Phenaco-tragus recki, described by Schwarz (1937) from the Oldoway beds of Tanganyika, and can reasonably be referred to the same genus. The Makapansgat specimens indicate an animal with horns more massive than those of P. recki and the horns differ also in rising more steeply from the frontal bone, in having a longer straight lower portion and in being laterally more compressed. These differences are regarded as of specific value. The paratype brain case (M 406) provides information regarding the back part of the skull, wh:ch is a little larger than in P. recki. The occipital and basal parts of the brain case are in a good state of preservation hut vhe parietal is very slight! y crushed. The nuchal aspect is almost identical with that of the living impala but the 43 Fig. 23- Phenacotragus vanhoepeni. Palatal aspect of paratype skull, M 598. Natural stze. basilar part of the occipital bone in the fossil is stouter and longer w:th much more strong! y developed basilar tubercles. The bulges of the parietal behind the parietal eminence in the impala are lacking in the fossil form, giving a different profile to the brain case. The portion of the occipital bone lying above the occipital crest is wider in the fossJ than in the impala. The para type skull (M 598) has sufficient of the back of the brain case preserved for it to be virtuaH y certain that it belongs to the same species as the brain case just described. The interest of the specimen attaches prima·ri'ly to the palate (Fig. 23) which possesses M 1 - M 3 of both sides. The teeth are smaller · than those of the impala or the springbok, though similar in general pattern. They agree closely with the palate of P. recki figured originally by Schwarz (1937) but in the Makapan specimen the lateral folds are sharper. From this palate it is possible to identify some fourteen partial upper dentitions and a dozen loose upper molars as belonging to the same species. Four of these from the right side have been selected to illustrate different stages of wear; their measurements (in mm) are given below, together with those of the paratype palate, and they are illustrated in Fig. 24. Eearly Early Moderate Advanced Para type wear wear wear wear M 598 IM 615 IM 611 ·M 609 M 612 P. recki p2 Length 6! 61 2 Breadth 6 51 2 p3 Length 8 10 71 2 Breadth 6 61 2 ~ 2 p4 Length 8 8! 9 7! 81 2 Breadth 7 71 2 7! 9 8 Ser~es P2 - P4 22! 221 2 M 1 Length 14 14 14 131 2 111 2 13! Breadth 11 10 9! 101 2 11! 111 2 M 2 Leng~h 161 2 16 16 15 15! 141 2 Breadth 11 10 10 10! 111 2 101 2 M 3 Length 14 14 15 17 141 2 Breadth 10 9 9! 11 10 Series M 1 - M 3 44! 44 43! 44 42! Ratio P X 100 53 M 45 It is not possible to associate the lower dentition with the uppers with any great degree of certainty but there are two dozen lower jaws or fragments and a dozen loose lower molars which have the requisite size and form. These may be accepted with some confidence as representing the lower dentition of P. yanhoepeni. They are typically gazelline in form, resembling the lower teetJh of the spring buck very closei y except that the fossil possesses well developed second and third premolars, whereas in the springbuck the second premolar is usually lacking and even the third premolar is vestigial. Six dentitions have been selected to illustrate various stages of wear. Their measurements (in mm) are given below and four are illustrated in Fig. 24. M 533 M496 Very Early Early (R) (L) {DM2 5?) 3? (DM3 9 ) 4 4 3 8 4 P'2 Length Breadth P3 Length Breadth P4 Length Breadth (DM415!) 6 10 5 Series P2 - P4 M1 Length Breadth M2 Length Breadth M 3 Length Breadth Series M1 - M 3 Ratio P X 100 M Height of jaw at P4jM1 14 6! 20 22 13 7 15! 6! 21 6! 491. 2 18 M502 M42 M38 M35 Moderate Moderate Moderate Advanced (L) (L) (L) (L) 8! 41. 2 9 6 12! 7! 15 8 21~ 7! 49 20 root 6 ?3 root 7 ?4 8 5 21est 111. 2 7 15 8 22 7 481. 2 43 20 root 5! ?31. . 2 root 6~ ?4 9 6 21est 11 7! 14 7! 23! 7! 481. 2 43 19 4! 3! 61. 2 4 9 5 20 11 7 13! 8 22! 8 47 421. 2 21 The specific name is chosen in honour of Dr E. C. N. van Hoepen, who first recogn:sed the occurence of a true gazelle (G. helmoedi) in ~he Quaternary of South Africa. 46 ~ '..J - --· _,.... ... ._.~."7""'-..._--:"'"'----:-.··-··-::-~· ··-r:---:::--··n----......... •. ~- ...,._ ... ~·------· w._._. - ....... ~----v-·'(>···-~-- M -615 M 533 J · M 35 Fig. 24-Phenacotragus vanhoepeni. REFERRED RIGHT UPPER DENTITIONS: M 615: p2 - M2 in early wear; M 611: p-1 - M3 in early wear; M 609: p3 - M3 in moderate wear; M 612: p4 - M3 in advanced wear. REFERRED LOWER DENTITIONS: M 533: RDM3 - M1 ; M 496: LP2 - M3 in early wear; M 502: LP3 · M'3 in moderate wear; M 35: LP2 - M3 in advanced wear. Natural size. DISCUSSION Large species It has been noted that, in several of the species not distinguishable from living forms, the mean size of the fo:;sil remains a{Proaches the upper size limit of the existing type. This is most apparent w:th the impala and Tragelaphus, and is suggested also for the buffalo, kudu and oryx. It seems possible that all rhese, and perhaps a:lso the klipspringer ( Oreotragus ma}or), represent large forms ancestral to the smaller existing species. Such a tendency for decrease in size of species during the Quaternary has been observed in other parts of ·the world. EnYironment The Mcrkapan Limeworks fauna includes no fewer than eighteen bovld species. Of these eight ca.n be regarded as certainly extinct; three of them are identified wit~h forms already known elsewhere while the other five are new. Three species belong to extinct genera (Phenacotragus, Makapania and Pelorocerus or Lunatoceras) and one to a genus not now represented in southern Africa (Gazella). This great wealth of species is clearly related to the physiographic setting of the site in a scrub-covered mountain mass, with extensive open or bush-covered plains at no great distance. It is instructive in this regard to compare the Makapan list of species with those from two sites belonging to a much more recent per:od (late Gamblian or Makalian*) - the Border Cave, Ingwavuma, (Codke, Malan and Wells 1945) and the Wonderwerk Cave, Kuruman (Malan and Cooke 1941; Malan and Wells 1943). The Border Cave assemblage repres·ents a broadly comparable range of environments under a climatic regime similar to that of the Makapan site to-day; that from Wonderwerk belongs to an area of appreciably lower rainfall. While the Border Cave fauna includes kudu, impala, and reedbuck, but lacks eland, . Oryx, and Damaliscus, ·n that of Wonderwerk the three last named are present (together with "Pelorocerus helmei'') but the former three are lacking. The presence in the Makapan fauna of an Oryx (albeit scantily represented) indicates that at some stage in the accumulation of the deposit vhe climate was appreciably drier than it ts now. In point of numbers the Makapan fauna is dominated by four species, Redunca darti, Phenacotragus 'Yanhoepni, Makapania broomi, and the wildebeest. It is remark­ able rhat three of these four are extinct and two belong ~no extinct genera. The less abundant species fall into two group3, those which are moderately well represented and those which are notably rare. In the former may be placed the buffalo, eland, and kudu, the supposed nyala, the mountain reedbuck, and three extinct species, Cephalophu, pricei, Oreotragus major, and Gazella gracilior. The la~ter group includes * Using these terms purely in a stratigraphic sense and without implying any sort of climatic correspondence. 48 the blue duiker, Oryx, impala, clle somewhat problematical Damaliscus, and the two large extinct species "Alcelaphus robustus" and ''Pelorocerus helmei". Although none of these three groupings can be said to consist entirely of species characterising a particular environment, the total impression conveyed by the bovid fauna suggests a moderately well watered, bushy valley opening on to nearby plains which, at no great distance, were decidedly dry. Age and Affinities · The only pre-Gamblian bovid fauna hitherto described from South Africa is that of the Vaal River deposits (Cooke 1949) . This is essentially a plains assemblage, though it includes both "steppe" (Damaliscus, springbok, eland) and "savannah" (impala, sable, kudu) species. The Vaal River fauna includes "Pelorocerus", Alce­ laphus robustus, a Gazella seemingly different from the Makapan species, and a giant buffalo (Homoioceras bainii), which has not been identified at Makapan. Including the other mammalian groups, the Vaal River assemblage as a whole resembles that of Olduvai in Tanganyika (~Leakey 19511) and is probably of Kanjeran age in the main but includes Kamasian elements. The Makapan Bovidae give the immediate impression of a more archaic chara~ter than those of the Vaal River gravels, and the Makapan deposit may confidently be regarded as older than Kanjeran. On the other hand, the large number of species not distinguishable from living forms seems to exclude an age greater than Kageran, * but it must be remembered ~hat more complete knowledge would probably diminish rather than increase this number. As between a Kageran or Kamasian age, the bovid fauna offers little helpful guidance. A more exact a:ssessment of 'bhe age of the ~eposit can therefore be reached only by taking into account the whole of the described fauna. A valuable preliminary attempt in this direction has been made by Ewer (1956). 'Her arguments in favour of a Kageran age are based on faunal lists for southern Africa in which data for ~he Bovidae (and some other important elements) were not available. It is not surprising, as she herself anticipated, that her conclusions may need some modification in the light of additional evidence. Apart from the Bovidae here considered, the fauna of the Makapan Limeworks quarry includes a varied assortment of other mammals. Some of these have be~ described during the past ten years by different authors but tjhere are still a number of elments in the fauna which have not hitherto been record·ed. The following table constitutes as complete a list of the whole fauna as it is pos'S'ible to present at thi's stage. In the case of species first named from this site, the author's name and date serves as a reference; in othe·r cas·es, the reference to ~he aut:hority for recording the species is given in square brackets after the name of the specific taxonomist. New * typified faunally by the-· deposits at Omo, Kaiso and Kanam. 49 records are indicated by an asterisk ( *) following the item and definitely extinct species are shown by an obelus ( t) before it. INSECTIVORA Gen. et sp. indet. * PRIMATES t Simopithecus darti (Broom and Jensen 1946) [Freedman, 1955] ( == Dinopithecus sp. (Broom and Hughes 1949); == Brachygnathopithecus peppercorni Kitching 1952; == Gorgopithecus wellsi Kitching 1953) t Parapapio broomi Jones [Mollet 1946; Freedman 1955] ( == P. makapani Broom and Hughes 1949) t Parapapio jonesi Broom [Kitching, Wells and Westphal, 1948; Freedman 1955] t Cercopithecoides williamsi Mollet 1946 [Freedman 1955] t Au.stralopithecus prometheus Dart 1948 LAGOMORPHA Leporidae indet. * RoDENTIA Muridae indet* Hystrix c£ africae-australis Peters [Greenwood 1955] t Hystrix major Greenwood 1955 t Xenohystrix crassidens Greenwood 1955 t Gypsorhychus makapani Broom 1948 CARNIVORA Canis sp.* Vulpes sp. * Cynictis sp.* t Crocuta c£ bre'Yirostris Aymard [Toerien 1952] t Hyaena makapani Toerien 1952 Felidae indet* t Machaerodus darti Toerien 1955t PROBOSCIDEA Gen. et sp. indet* HYRACOIDEA t Proca'Yia trans'Yaalensis Shaw [Churcher 1956] t Procavia antiqua Broom [ Churcher 1956] PERISSODACTYLA t S tylohipparion sp. * t Metaschiz.otherium transvaalensis George 1950 ? Ceratotherium sp.* Diceros cf bicornis* + Equals Therailurus barlowi (Broom) according to Ewer (This Journal below] 50 ARTIODACTYLA t Potamochoeroides hypsodon Dale 1948 t ((Pronotochoerus" shawi Dale 1948 t N otochoerus sp. * Hippopotamus cf amphibius Linnaeus [ == H. makapanensis Kitching 1951] Giraffa cf camelopardalis Linnaeus [Cooke and Wells 1947) t Griquatherium cf cingulatum Haughton [Cooke & Wells 1947) Strepsiceros cf strepsiceros (Pallas)* Strepsiceros (Tragelaphus) cf angasi (Gray)* T aurotragus cf oryx (Pallas)* cf Syncerus caffer (Sparrman) * t Cephalophus pricei sp.nov.* cf Cephalophus (Guevei) caerulus (Hamilton Smith)* t Redunca darti sp.nov. * Redunca cf fulvorufula (Afzelius) * cf Oryx gazella (Linnaeus) * Damaliscus sp. ( aff. albifrons) * cf Gorgon taurinus (Burchell)* t cf Alcelaphus robustus Cooke* t cf Pelorocerus helmei (Lyle)* t Makapania broomi gen. et sp.nov.* t Oreotragus major Wells* Aepyceros- cf melampus (Lichtenstein)* t Gazella gracilior sp.nov. * t Phenacotragus vanhoepeni sp.nov. * In some of the groups listed above (e.g. L4gomorpha) ~he species have not yet been worked out and it is impossible to indicate whether they are extinct or not. Allowing a minimum of one species in each of these cases, the total faunal list compr:ses not fewer than forty-eight species. Apart from the Bovidae there are 30 species, of which 19 are certainly extinct and 5 cannot be separated specifically from living forms; the position of the remaining 6 is "doubtful". In rhe case of the 18 1Bovidae, eight are extinct and 9 cannot be distinguished specifically from living species, although in several cases this statement needs to be qualified owing to the fragmentary character of the remains; 1 species (the Damaliscus) is probably extinct and may be placed in the "doubtful" category. Of the 41 adequately determined species 27 are extinct and 14 cannot be separated from living forms. Ewer (1956) gives for the Australopithecine deposits as a whole a figure of 12% for the species "not more ~han sub-specifically distinct" from the living forms. For the Ma!kapan Limeworks the indicated percentage is now 34%, which affects the conclusions materially. For the percentage of genera which are extinct, Ewer gives 53% for the Australopithecine deposits as a whole; the present Makapan figure is 55% without the iBovidae but only 41 % when they are included. T 'his latter figure is comparable witth 1Ewees 40% each for Omo and Olduvai. 51 As Ewer's figures for the Transvaal limestone caves did not include any records of Bovidae, h~r conclusions regarding the probable relative ages of the sites are not affected at present. The view that Makapan Limeworks and the Sterkfontein type site are the oldest and are very close to each other in time may later be tested by a study of the Bovidae; ~he Kromdraai and Swartkrans sites are clearly somewhat younger. One cannot avoid concluding that when the 1Bovidae at Sterkfontein, Krom­ draai and Swartkrans are studied, the apparent percentage of extinct genera will decrease as it has at Makapan and will come more into line with those for Omo and Olduvai, where the Bovidae are already included. According to Hopwood and to Macinnes (in Leakey 1951), !!he faunas of Omo, Kanam and Kaiso typify the Kageran stage; those of Olduvai Beds I and II, Laetolil and Rawi characterise the 1Kamasian stage; and Olduvai Bed N, Olorgesailie and Kanjera represent the Kanjeran stage. The table below shows the extinct genera represented at Makapan and in one or other of these stages. MAKAPAN Simopithecus "Machaerodus" S tylohipparion M etaschizotherium Pronotochoerus Notochoerus Phenacotragus KAGERAN ? X X X X KAMAS IAN X X X X X X X While the statistical value of such a tabulation is slender, it suggests that the Makapan Limeworks deposit may be partly of Kageran age. The best fit would be if it belongs to the latest Kageran or earliest Kamasian. In terms of the ~European time scale this is most probably Upper Villafranchian. It has been mentioned above rt:hat at Makapan a relatively dry climate during at least part of the period represented by this deposit can be inferred. It would probably be rash, however, to equate this too narrowly with the late Kageran dry phase or "Kageran-Kamasian interpluvial" of East Africa (vide du T oit, 194 7) . If, as appears to be the case, the Makapan Limeworks fauna is essentially Villafranchian, it is of interest that the Bovidae are mostly referable to genera still living. This feature is also apparent in ~he assemblage from Omo (which may be a little older) . The inference is that the African 1Bovidae were complete! y differentiated to the generic level at the beginning of the Pleistocene. Unfortunately the:r late Tertiary history in this continent is still unknown, but the Villafranchian ~Bovidae of India are so different from the African forms that a considerable period of :..eparate d:versification in Africa must be regarded as highly probable. 52 AcKNOWLEDGEMENTs The authors wish to express ~heir indebtedness to Professor R. A. Dart for placing the material at their disposal for description; to Mr A. R. Hughes for his energy in collecting most of the ·ma:terial and for taking the excellent photographs here reproduced; to Mr. James Kitching for his field work and for his skill in cleaning the specimens from their hard matrix and preparing them for study; to Dr A. S. Brink for providing laboratory facilities and otJher help; and to ·Dr S. 'H. Haughton for scientific advice and ed:torial assistance. Finally, the second author wishes to record his debt to the Royal Society, the Nuffield Foundation and the Wenner­ Gren Foundation for financial aid which made possible a study visit to England, Europe and East Africa during which comparat:ve data were collected that have been of considerable aid in assessing the Makapan material. REFERENCES ALLEN, G. M., 1939. A checklist of African mammals. Bull. Mus. Comp. Zoo!. Harvard, 83: 1-763. ARAMBOURG, C., 1941. An til opes nouvelle du Pleistocene ancien de l'Omo ( Abyssine) . Bull. Mus. Hist. Nat. Paris (2) 13: 343. ARAMBOURG, C., 1947. 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