中国北方一晚三叠世四足动物化石新地点

doi:10.19615/j.cnki.2096-9899.220818

摘要/Abstract

摘要：

中国北方还没有发现过确凿无疑的晚三叠世的四足动物化石。报道了河南省济源市的一个四足动物化石新地点(柿沟)。化石产自晚三叠世谭庄组。目前采集到的标本大部分可以归入离片椎类，并显示出与乳齿鲵(Mastodonsaurus)的高度相似性。之前，乳齿鲵只在欧洲有记录。因此这一发现表明乳齿鲵这一支系在晚三叠世曾广泛分布于欧洲与东亚地区。一块疑似腰带化石指示还有另一类四足动物共存。这一发现填补了我国晚三叠世四足动物实体化石记录的一个空白。

关键词: 河南济源, 晚三叠世, 谭庄组, 四足动物, 离片椎类, 乳齿鲵

Abstract:

No definite tetrapod body fossil is known from the Late Triassic of North China. Here we report new tetrapod remains from the Upper Triassic Tanzhuang Formation of Jiyuan, Henan Province. Most of the specimens can be referred to the temnospondyls, and show affinity with Mastodonsaurus. Previously, Mastodonsaurus is only know from Europe. So that, this finding indicates that a clade including Mastodonsaurus and its close relatives had a wide distribution from Europe to East Asia during the Late Triassic. A possible pelvis indicates the presence of another tetrapod group. This discovery fills a tetrapod body record gap in Chinese Late Triassic.

Key words: Jiyuan, Henan, Late Triassic, Tanzhuang Formation, tetrapod, temnospondyls, Mastodonsaurus

中图分类号:

Q915.863

石雨泰, 陈建业, 刘俊. 中国北方一晚三叠世四足动物化石新地点. 古脊椎动物学报, 2023, 61(1): 17-25.

SHI Yu-Tai, CHEN Jian-Ye, LIU Jun. A new Late Triassic tetrapod locality from North China. Vertebrata Palasiatica, 2023, 61(1): 17-25.

图/表 4

Fig. 1 IVPP V31168 and similar capitosauroid interclavicles A. Eryosuchus (SGU 104/3090-4); B. Cyclotosaurus intermedius (ZPAL Ab III 887?1);C. Mastodonsaurus giganteus (redrawing from Schoch, 1999); D, E. IVPP V31168 A-D. ventral view; E. dorsal view. Scale bars equal 5 cm

Fig. 2 An incomplete stereospondyls ?rib from Jiyuan (IVPP V31169) in posterior (A), anterior (B) and distal (C) views

Fig. 3 Photos of three stereospondyl intercentra from Jiyuan in anterior (A1, B1, C1), posterior (A2, B2, C2), dorsal (A3, B3, C3) and left lateral (A4, B4, C4) views A. IVPP V31170; B. V31171; C. V31172 Abbreviations: ci. chorda incisure; na. neural arch; pp. parapophysis

Fig. 4 Photo of a possible pelvis in lateral view (IVPP V31173) from Jiyuan The black line shows the outline of bone

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