Dicynodont postcrania from the Triassic of Namibia and their implication for the systematics of Kannemeyeriiforme dicynodonts

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dc.contributor.author Govender, Romala
dc.contributor.author Yates, Adam
dc.date.accessioned 2014-02-18T07:40:34Z
dc.date.available 2014-02-18T07:40:34Z
dc.date.issued 2009-12
dc.identifier.issn 0078-8554
dc.identifier.uri http://hdl.handle.net10539/13816
dc.description.abstract Recent years have seen a renewed interest in the postcranial anatomy of Triassic dicynodonts from Africa. This study investigates the previously undescribed dicynodont postcrania from the Omingonde Formation of Namibia. Two valid dicynodont species, based upon crania, are known from this formation: Dolichuranus primaevus and Kannemeyeria lophorhinus. Dolichuranus displays a primitive generalized cranial anatomy that has made it difficult to place in Triassic dicynodont phylogeny. Some of the postcranial specimens can be positively identified as D. primaevus on the basis that they were associated with skulls of this species. Two scapula morphologies can be distinguished among the postcranial specimens that are not positively associated with diagnostic cranial remains. One of these shares similarities with the scapula of Kannemeyeria simocephalus from South Africa and is provisionally referred to K. lophorhinus. The other displays unusual characters such as the absence of an acromion and a tubercle on the lateral surface of the scapula at the level where the acromion would be expected. Inclusion of the new postcranial data in a cladistic analysis of Triassic dicynodonts resolves the position of D. primaevus as a member of Sinokannemeyeriidae. It also causes an enigmatic unnamed postcranial taxon from equivalently aged beds in South Africa to fall within the Sinokannemeyeriidae. These results highlight the importance of including postcranial data in analyses of Triassic dicynodont relationships. en_ZA
dc.language.iso en en_ZA
dc.publisher Bernard Price Institute for Palaeontological Research, University of the Witwatersrand en_ZA
dc.subject Dolichuranus en_ZA
dc.subject dicynodont en_ZA
dc.subject Triassic en_ZA
dc.subject Namibia en_ZA
dc.title Dicynodont postcrania from the Triassic of Namibia and their implication for the systematics of Kannemeyeriiforme dicynodonts en_ZA
dc.type Article en_ZA


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