The cranial morphology and taxonomic status of Tarchia (Dinosauria: Ankylosauridae) from the Upper Cretaceous of Mongolia

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• 作者：Paul Penkalski^a ; ^{pgpenkal@gmail.com} ; Tatiana Tumanova^b ; ^{ttuman@paleo.ru}
• 关键词：Tarchia ; Minotaurasaurus ; Ankylosauridae ; Dinosauria ; Cretaceous
• 刊名：Cretaceous Research
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：70
• 期：Complete
• 页码：117-127
• 全文大小：5072 K
• 卷排序：70

文摘

The taxonomic status of specimens referred to Tarchia kielanae, T. gigantea, and Minotaurasaurus ramachandrani has been contested. The holotype of T. kielanae, Zaklad Paleobiologii (Institute of Paleobiology)-Polish Academy of Sciences (ZPAL) MgD I/111, is redescribed. It has features common to both Palaeontological Institute-Russian Academy of Sciences (PIN) 3142/250, long considered Tarchia, and to M. ramachandrani but which are lacking in Saichania chulsanensis. The specimen PIN 3142/250 is not referable to Saichania but instead represents a new species, Tarchia teresae sp. nov. Similarly, the holotype skull of M. ramachandrani is not referable to T. kielanae, so Minotaurasaurus is a valid taxon. Tarchia is more derived than either Saichania or Minotaurasaurus while sharing features of both.