Volume 34 1997
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- ItemPalaeontologia africana Volume 34(Bernard Price Institute for Palaeontological Research, 1997)
- ItemInsect faunas of South Africa from the upper Permian and the Permian/ Triassic boundary(Bernard Price Institute for Palaeontological Research, 1997) van DijkThose sites in South Africa where more than one insect fossil specimen has been found have been interpreted as younger than Middle Triassic or as Late Permian. One site which has yielded a number of specimens and is apparently near the Permian/Triassic boundary is a quarry in the town of Bulwer KwaZulu- Natal. There are six sites with more than one insect specimen which are stratigraphically lower than Bulwer, namely Escourt (a new site), Far End, Mooi River (National Road), Mount West, Balgowan and Lidgetton. According to the 1984 1 : 1 000 000 Geological Map of Southern Africa Bulwer is situated in the Tarkastad Subgroup of the Beaufort Group near its lower boundary; the Tarkastad has been considered as Triassic. the remaining sites, except Balgowan and Lidgetton, fall in the Estcourt Formation of the Beaufort Group, a do all the sites with single Late Permian specimens except for one similarly aged specimen from the more easterly Emakwezeni formation. The stratigraphically lowest sites are Lidgetton and slightly younger Balgowan; both are mapped as Volksrust Formation of the Ecca Group. An analys is is made of vertical distribution of taxa, with those of Lidgetton and Balgowan grouped together as a lower unit, of Bulwer as upper unit, and of the Estcourt formation sites and Emakwezini site as a middle unit. No obvious break between the three units has been noted.
- ItemInsect faunas of South Africa from the upper permian and the Permian/Triassic boundary(Bernard Price Institute for Palaeontological Research, 1997) van Dijk, D. E.Those sites in South Africa where more than one insect fossil specimen has been found have been interpreted as younger than Middle Triassic or as Late Permian. One site which has yielded a number of specimens and is apparently near the Permian/Triassic boundary is a quarry in the town of Bulwer KwaZulu-Natai. There are six sites with more than one insect specimen which are stratigraphically lower than Bulwer, namely Escourt (a new site), Far End, Mooi River (National Road), Mount West, Balgowan and Lidgetton. According to the 1984 1: 1 000 000 Geological Map of South em Africa Bulwer is situated in the Tarkastad Subgroup of the Beaufort Group near its lower boundary; the Tarkastad has been considered as Triassic. The remaining sites, except Balgowan and Lidgetton, fall in the Estcourt Formation of the Beaufort Group, as do all the sites with single Late Permian specimens except for one similarly aged specimen from the more easterly Emakwezeni Formation. The stratigraphically lowest sites are Lidgetton and slightly younger Balgowan; both are mapped as VoIksrust Formation of the Ecca Group. An analysis is made of vertical distribution of taxa, with those of Lidgetton and Balgowan grouped together as a lower unit, of Bulwer as upper unit, and of the Estcourt Formation sites and Emakwezini site as a middle unit. No obvious break between the three units has been noted.
- ItemFirst record of a Paranacystid mitrate from the Bokkeveld Group of South Africa(Bernard Price Institute for Palaeontological Research, 1997) Ruta, MarcelloThe Upper Eifelian paranacystid mitrate Paranacystis simoneae sp. nov. from the Waboomberg Formation (Bokkeveld Group, We stern Cape Province, South Africa) is described and a revised diagnosis of the Family Paranacystidae is presented. Paranacystis simoneae differs from Paranacystis petrii, the type species of the genus, in possessing a remarkably well-developed right subcentral plate; the latter extends distally with respect to the distal margins of the left and right intermediate lateral marginal plates, and bears a robust, distal triangular process. Other features of Paranacystis simoneae are: the presence of knobs on the proximal three-quarters of the lateral margins of the two proximal lateral marginal plates; the presence of two latero-distal pits, probably associated with the main orifice of the body; and a well-developed styloid process. Paranacystis simoneae extends both the geographical and the stratigraphical range of the genus, and strengthens the links between Malvinokaffric fossil faunas from the central and western parts of Gondwana in the Devonian.
- ItemFirst record of Eunotosaurus (Amniota: Parareptilia) from the Eastern Cape.(Bernard Price Institute for Palaeontological Research, 1997) Gow, Chris E.; de Klerk, BillyEunotosaurus is a rare tetrapod fossil until recently known only from the Tapinocephaluszone of the main Karoo basin of Cape Province. A single specimen has recently been collected in the Free State (Weiman, pers. com.). This paper describes a new find from the Eastern Cape, where outcrops of Karoo rocks are scarce. The new specimen adds previously unknown morphological detail, particularly about the limbs. Phylogenetic affinities are clearly with the Parareptilia. particularly about the limbs. Phy logene tic affinities are clearly with the Parareptilia.