Osteology of Turfanodon bogdaensis (Dicynodontia)  

博格达吐鲁番兽(二齿兽类)的骨骼学

作　　者：SHI Yu-Tai LIU Jun 石雨泰;刘俊(中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室,北京100044;中国科学院大学地球与行星科学学院,北京100049)

机构地区：[1]Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044 [2]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049

出　　处：《古脊椎动物学报（中英文）》2024年第3期186-200,共15页Vertebrata Palasiatica

基　　金：中国科学院战略性先导科技专项(B类)(编号:XDB26000000);中国科学院大学生创新实践训练计划资助。

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.吐鲁番兽(Turfanodon)是一类生活在二叠纪晚期的二齿兽类,曾广泛分布在新疆至华北一带。目前该属下建立有两个种--博格达种(T.bogdaensis)与九峰种(T.jiufengensis)。两个种都具有相对完整的头骨材料,但只有九峰种报道了下颌及头后骨骼材料。一批产自新疆吐鲁番地区,可以归入到博格达吐鲁番兽的新材料,具有一系列可以明显区别于九峰种的特征,包括头骨的鼻吻部侧面平坦,下颌齿骨侧架成肿突状,以及股骨头为近半球状。吐鲁番兽属的鉴别特征也有更新,包括眼框周缘平坦,两条翼骨前支上的嵴向后汇聚,以及一个可能的自有衍征:肩胛骨上参与塑造乌喙孔的凹缺很大。吐鲁番兽腭部的中嵴两侧发育有副嵴,这一特征区别于除肌龙兽(Myosaurus)、掘铁兽(Kembawacela)和水龙兽(Lystrosaurus)外的其他二齿兽类。

关 键 词：Turpan Xinjiang Lopingian Permian Guodikeng Formation Dicynodontia Turfanodon osteology postcranial skeleton 

分 类 号：Q915.864[天文地球—古生物学与地层学]