Cranial morphology and taxonomy of South African Tapinocephalidae (Therapsida: Dinocephalia): the case of Avenantia and Riebeeckosaurus

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dc.contributor.author Guven, Saniye
dc.contributor.author Rubidge, Bruce S.
dc.contributor.author Abdala, Fernando
dc.date.accessioned 2013-12-18T12:12:35Z
dc.date.available 2013-12-18T12:12:35Z
dc.date.issued 2013-12-18
dc.identifier.issn 0078-8554
dc.identifier.uri http://hdl.handle.net10539/13310
dc.description.abstract Tapinocephalid dinocephalians comprise a large component of Middle Permian herbivorous tetrapod biodiversity and are significantly abundant in the Karoo rocks of SouthAfrica. In order to understand the effect of the alleged Middle Permian extinction in the terrestrial record of amniotes a clear understanding of the taxonomic diversity of this group is essential. The tapinocephalids Avenantia kruisvleiensis and Riebeeckosaurus longirostris have in the past been distinguished by a set of characters, including differences in the snout length which was previously interpreted as a key diagnostic character. Further preparation of the material attributed to these species shows that the purported distinguishing characters, such as snout length, low intertemporal crest, and surface thickening of the parietal represent postmortem deformation (including distortion and weathering) or can be interpreted as individual or ontogenetic variation. Accordingly A. kruisvleiensis is synonimized with R. longirostris. en_ZA
dc.description.sponsorship Palaeontological Scientific Trust NRF/DST Centre of Excellence in Palaeosciences en_ZA
dc.language.iso en en_ZA
dc.publisher Evolutionary Studies Institute, University of the Witwatersrand en_ZA
dc.subject herbivorous Dinocephalia en_ZA
dc.subject Tapinocephalidae en_ZA
dc.subject Tapinocephalus Assemblage Zone en_ZA
dc.subject Karoo Basin en_ZA
dc.subject South Africa en_ZA
dc.title Cranial morphology and taxonomy of South African Tapinocephalidae (Therapsida: Dinocephalia): the case of Avenantia and Riebeeckosaurus en_ZA
dc.type Article en_ZA


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