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标题：Do specimens attributed to Lystrosaurus murrayi and L. declivis (Triassic Therapsida) represent one species?
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作者：J. Francis Thackeray
期刊名称：South African Journal of Science
印刷版ISSN：0038-2353
电子版ISSN：1996-7489
出版年度：2018
卷号：114
期号：3-4
页码：8-9
DOI：10.17159/sajs.2018/a0258
语种：English
出版社：The Foundation for Research Development
摘要：Lystrosaurus murrayi and L. declivis are two dicynodont (Therapsida, or mammal-like reptile) species commonly represented in Triassic deposits which are referred to as the ‘Lystrosaurus Assemblage Zone’ of the South African Karoo, postdating the Permo-Triassic boundary at 252 million years ago. The holotypes of these two species are curated in the Natural History Museum in London. Unfortunately, both are fragmentary (personal observation). Despite the fragmentary condition of the holotypes, Cluver 1 , Cluver and King 2 and Brink 3 accepted the view that at least two species of Lystrosaurus (L. murrayi and L. declivis) could be distinguished.
关键词：holotypes;dicynodont;conspecific;Lystrosaurus;therapsid