Palaeontologia africana

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ISSN (print): 0078-8554 ISSN (electronic): 2410-4418 For queries regarding content of Palaeontologia africana collections please contact Jonah Choiniere by email : jonah.choiniere@wits.ac.za or Tel : 011 717 6684

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    A sauropodomorph dinosaur from the ?Early Jurassic of Lusitu, Zambia
    (2015-04-01) Choiniere, Jonah N
    Dinosaur material has been reported from Zambia but remains undescribed. The first record, from the upper Luangwa Valley, was mistakenly identified and pertains instead to indeterminate dicynodonts. The only other report on Zambian dinosaur material concerns associated partial hind limb and vertebral material collected from an Upper Karoo sandstone in the vicinity of Lusitu. We provide a description of this specimen, the first definitive dinosaur to be reported from Zambia, and identify it as an indeterminate basal sauropodomorph. Unfortunately, the precise age of the specimen remains unknown, although an Early Jurassic age seems likely.
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    A dinosaur fauna from the Late Cretaceous (Cenomanian) of northern Sudan
    (Bernard Price Institute for Palaeontological Research, 1999) Rauhut, Oliver W M
    A dinosaur fauna from the Cenomanian of northern Sudan (Wadi Milk Formation) is described. It comprises at least nine, probably ten to eleven taxa: a dicraeosaurid, a titanosaurid and another undetermined sauropod (possibly a titanosaurid), two charcharodontosaurids, a dromaeosaurid, a probable hypsilophodontid and two iguanodontian ornithopods. It is one of the most diverse dinosaur faunas known from the Cretaceous of Africa. The environment was probably a semiarid savanna with some rivers, lined by dense vegetation, with abundant sauropods, less abundant theropods and rare ornithopods. Gigantic carcharodontosaurids were at the top of the food chain. At the present state of knowledge, the dinosaur fauna from the middle to late Cretaceous of Africa can be characterized by the presence of carcharodontosaurids, spinosaurids, titanosaurids, diplodocoids, and possibly iguanodontian ornithopods.
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    Eunotosaurus africanus and the Gondwanan ancestry of anapsid reptiles
    (Bernard Price Institute for Palaeontological Research, 2000) Modesto, Sean Patrick
    Phylogenetic analyses confirm that the turtle-like Late Permian reptile Eunotosaurus africanus is a parareptile (sensu deBraga & Reisz 1996) and identify it as the sister taxon of Procolophonomorpha. The tree topology for anapsid reptiles suggests that a distribution in Gondwanan Pangaea is ancestral for anapsids (sensu Gauthier, Kluge & Rowe 1988). Minimum divergence times (MDTs) determined from stratigraphic calibration of anapsid phylogeny suggest that anapsids were diversifying in Early Permian Gondwana as early as the Sakmarian. MDTs also support the idea that a preservational bias was operating on terrestrial vertebrates in Gondwana prior to the onset of continental sedimentation in the Late Permian.