贵州省中三叠世盘县生物群乌蒙龙属(Wumengosaurus)的新种  

A New Species of Wumengosaurus from Panxian Fauna in Middle Triassic of Guizhou Province

作　　者：秦燕娇 贺箫 罗永明 胡歆睿 蒋良兵 邓小杰 史振华 冉维宇 QIN Yan-jiao;HE Xiao;LUO Yong ming;HU Xin-rui;DENG Xiao-jie;JIANG Liang-bin;SHI Zhen-hua;RAN Wei-yu(Guizhou geological museum,Guiyang 550018,Guizhou,China;Guizhou Geological Survey,Guiyang 550081,Guizhou,China)

机构地区：[1]贵州省地质博物馆,贵州贵阳550081 [2]贵州省地质调查院,贵州贵阳550081

出　　处：《贵州地质》2021年第4期373-381,共9页Guizhou Geology

基　　金：贵州省科技计划项目(黔科合支撑[2020]4Y003号)资助。

摘　　要：本文记述了一类新发现于贵州省盘州地区的中三叠世Anisian期乌蒙龙属新种。通过对一具鳍龙类标本进行描述,并与现已知盘县生物群鳍龙类对比后发现,这一新标本的骨骼形态整体特征与乌蒙龙属Wumengosaurus特征基本相似,具有狭长的吻部,显著多于其他鳍龙类的牙齿数量。但标本在细部特征上与乌蒙龙属模式种的纤颌乌蒙龙Wumengosaurus delicatomandibularis Jiang et al.,2008有着显著的差异:其间腕骨intermedium呈扁平的圆形,牙齿呈细长的尖锥状,无冠部膨大。且标本与纤颌乌蒙龙Wumengosaurus delicatomandibularis Jiang et al.,2008在掌骨、跖骨形态等方面也有着不同的特征。现依据该标本特征建立乌蒙龙属新种圆腕乌蒙龙Wumengosaurus rotundicarpus,sp.nov。A new species of Wumengosaurus is described from the Anisian(middle Triassic)of Panxian in Guizhou Province.After compare one new specimen with the known sauropterygian from Panxian Biota,it has been found that the new specimen has the familiar characters with the Wumengsaurus,it has a slender snout,and significantly more teeth than other Sauropterygian.But there is obvious differences between the new specimen and Wumengosaurus delicatomandibularis Jiang et al.,2008:the new specimen has a flat and round-like intermedium,its teeth are conical and slender,but with out a basally expaned crown.It also has different characteristics in the morphology of metatarsals and metatarsals.Based on the characteristics of this specimen,a new species Wumengosaurus rotundicarpus,sp.nov is established.

关 键 词：盘县生物群 乌蒙龙属 鳍龙超目 贵州 

分 类 号：Q91[天文地球—古生物学与地层学] P534.51[生物学—古生物学]