• 首页
  • 学报简介
  • 编委会
  • 投稿指南
  • 订阅指南
  • 过刊浏览
  • 在线投稿
  • 联系我们
  • 网络预出版
  • English

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(0)   不支持(0)

湖北早三叠世鱼龙前肢化石新材料及对比讨论
投稿时间:2019-02-25  修订日期:2019-09-22  点此下载全文
引用本文:
DOI:10.19762/j.cnki.dizhixuebao.2020028
摘要点击次数: 38
全文下载次数: 40
作者单位E-mail
邹亚锐 湖北省地质科学研究院 569007425@qq.com 
赵璧 湖北省地质科学研究院 312865130@qq.com 
陈刚 湖北省地质科学研究院  
李姜丽 湖北省地质科学研究院  
程龙 中国地质调查局武汉地质调查中心  
阎春波 中国地质调查局武汉地质调查中心  
谭秋明 湖北省地质科学研究院  
基金项目:湖北省地质局科技项目“湖北远安早三叠世海生爬行动物群组合特征研究”(KJ2018-02)、湖北省地质勘查基金项目“湖北省远安县地质遗迹与重要古生物化石调查”(DTCG-190401)、国家自然科学基金项目“中扬子地区嘉陵江组的牙形石序列及其年代地层学意义”(41402005)、国家自然科学基金项目“早三叠世生物复苏期湖北鳄类多样性及其沉积环境研究”(41972014)、中国地质调查局地质调查项目“黄柏河流域综合地质调查”(DD20190823)
中文摘要:杨钟健和董枝明曾在1972年指出中国发现的早三叠世鱼龙Chaohusaurus geishanensis与欧洲的Grippia前肢和头部相似,具有系统关系。但后来中国该时代鱼龙类化石大多前肢特化或不完整,难以进一步对比研究。本文记述了湖北下三叠统嘉陵江组中发现的2件较完整的鱼龙前肢化石新材料,对中国的古老鱼龙类相关信息进行了补充。通过形态学对比,认为湖北被归入Chaohusaurus的早三叠世鱼龙前肢总体特征与同属的Ch.geishanensis接近而与Ch.chaoxianensis有明显差别,而且其以相对较大的个体、间中骨挤压变形以及豌豆骨发育等特征表现出与Grippia、Utatsusaurus、Parvinatator等其他早三叠世鱼龙类前肢的相似性。据此分析推测,早三叠世鱼龙类可能存在两个演化方向。即在二叠纪末大灭绝(EPME)事件后不久,鱼龙类起源并在奥伦尼克期出现分化,一部分个体相对较大、前肢未特化、运动能力较强的鱼龙类实现了跨区交流,另一些个体相对较小、前肢特化、运动能力较弱的鱼龙类则成为地方性(东特提斯区)的独立演化分支。但两者之间的系统发生关系以及Chaohusaurus的单系性还有待进一步研究揭示。
中文关键词:湖北  早三叠世  嘉陵江组  鱼龙超目  前肢
 
New forefin specimens of Early Triassic ichthyopterygia from Hubei and Comparative Discussions
Author NameAffiliationE-mail
ZOU Yarui Hubei Institute of Geosciences,Wuhan,430034 569007425@qq.com 
Zhao Bi Hubei Institute of Geosciences,Wuhan,430034 312865130@qq.com 
CHEN Gang Hubei Institute of Geosciences,Wuhan,430034  
Li Jiangli Hubei Institute of Geosciences,Wuhan,430034  
Cheng Long Wuhan Center of China Geological Survey  
Yan Chunbo Wuhan Center of China Geological Survey  
TANG Qiuming Hubei Institute of Geosciences,Wuhan,430034  
Abstract:Chaohusaurus geishanensis, an Early Triassic ichthyopterygians found in China, shares similar forefin and skull structures and reveals the systematic relationship to Grippia in Europe. However,it was difficult for further contrast because specimens later discovered in China were highly specialized in forelimb or incomplete. Here two nearly complete and non—specialized forelimbs of Chaohusaurus are described,which were found in the Lower Triassic Jialingjiang Formation in Hubei,and supplemented related information of basal ichthyopterygians in China. Morphological comparison reveals that the general features of the Early Triassic Chaohusaurus in Hubei were close to Ch.geishanensis of the same genus,but distinctively different from Ch.chaoxianensis. Its features such as relatively large individual, intermedium squeezing and deformation and pisiform development shared some similarities with Grippia, Utatsusaurus, Parvinatator and other Early Triassic ichthyopterygians. According to analysis and deduction on this basis,there were possibly two directions for evolution of Early Triassic ichthyopterygians. After the end-Permian mass extinction (EPME),ichthyopterygians origin and soon differentiate during Olenekian.Some large individuals without specialized forelimbs and with strong motor ability achieved exchange between different regions,but some small individuals with specialized forelimbs and weak motor ability became local (eastern?Tethys) independently evolving branch. However,the revelation of the phylogenetic relationship between them and the monophyly of Chaohusaurus need to be tested with future studies.
keywords:Hubei,Early Triassic  Jialingjiang Formation  ichthyopterygia  forelimb
查看全文  查看/发表评论  下载PDF阅读器
您是第12903585位访问者  京ICP备05032737号-7  京公网 安备110102004559
版权所有:《地质学报》中文版
主管单位:中国科学技术协会 主办单位:中国地质学会
地  址: 北京市西城区百万庄大街26号 邮编:100037 电话:010-68312410,010-68999025 E-mail: dizhixuebao@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat