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Osteology of Turfanodon bogdaensis (Dicynodontia)

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摘要: Within the dicynodont genus Turfanodon, there are two recognized species, T.bogdaensis and T. jiufengensis. Both species are known by relatively complete cranial materials, but the mandibles and most postcranial bones have been described only for T. jiufengensis. This paper reports new dicynodont specimens from Turpan, Xinjiang, referring them to T. bogdaensis. They can clearly be differentiated from T. jiufengensis by the flatter lateral surface of the snout region, a prominent swelling on the lateral dentary shelf, and the rounded femoral head. The diagnosis of Turfanodon is revised. The combination of a flat circumorbital rim, posterior portion of anterior pterygoid rami with converging ventral ridges, and a possible autapomorphy, a deep notch on scapula forming procoracoid foramen, are confirmed. It also differentiated from all dicynodonts other than Myosaurus, Kembawacela and Lystrosaurus by having accessory ridges lateral to the median palatal ridge. 

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[V1] 2024-05-31 14:23:00 ChinaXiv:202405.00354V1 下载全文
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