Taxonomic revision of the short-snouted tapinocephalid dinocephalia (Amniota-Therapsida): the key to understanding middle Permian Tetrapod biodiversity

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dc.contributor.authorNeumann, Saniye
dc.date.accessioned2021-10-02T18:04:59Z
dc.date.available2021-10-02T18:04:59Z
dc.date.issued2020
dc.descriptionA thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophy Johannesburg, 2020en_ZA
dc.description.abstractThe middle Permian period marks the origin and rapid diversification of therapsid synapsids such that all the main therapsid families (with exception of the Cynodontia) were already presentat that time. Dinocephalia, apart from being the earliest large therapsids, comprised a major component of the middle Permian terrestrial ecosystems and despite their taxonomic diversity and apparent ecological success they went extinct at the end of the Capitanian stage of the Middle Permian, thus having the dubious distinction of being the first therapsid lineage to face extinction. The most diverse dinocephalian family, in terms of both species and numbers of individuals, are the Tapinocephalidae. This herbivorous group of derived dinocephalians (comprising both short-and long-snouted forms) are known from Russia, Zimbabwe, Tanzania and are most abundantly represented by discoveries from the South African Karoo Supergroup. Taxonomic revision of the short-snouted tapinocephalids, for the first time accompanied by detailed anatomical descriptions and illustrations of representative cranial material, enabled recognition ofeight monospecific genera out of 23 described holotypes. These are Tapinocaninus pamelae, Ulemosaurus svijagensis, Riebeeckosaurus longirostris, Moschognathus whaitsi, Agnosaurus pienaari, Moschops capensis, Criocephalosaurus vanderbyli, Tapinocephalus atherstonei. Mormosaurus and Keratocephalus are now considered to be long-snouted, and Keratocephalusis synonymised with Struthiocephalus whaitsien_ZA
dc.description.librarianCK2021en_ZA
dc.facultyFaculty of Scienceen_ZA
dc.format.extentOnline resource (xxxix, 411 pages)
dc.identifier.citationNeumann, Saniye. (2019). Taxonomic revision of the short-snouted tapinocephalid dinocephalia (amniota-therapsida) :the key to understanding middle Permian Tetrapod biodiversity, University of the Witwatersrand, https://hdl.handle.net/10539/31602
dc.identifier.urihttps://hdl.handle.net/10539/31602
dc.language.isoenen_ZA
dc.phd.titlePhDen_ZA
dc.subject.lcshTherapsida
dc.subject.lcshAnatomy, Comparative
dc.subject.lcshReptiles, Fossil.
dc.titleTaxonomic revision of the short-snouted tapinocephalid dinocephalia (Amniota-Therapsida): the key to understanding middle Permian Tetrapod biodiversityen_ZA
dc.typeThesisen_ZA
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