贵州安顺龙宫海生爬行动物的发现及意义  

Discovery and significance of the marine reptiles from Longgong,Anshun,Guizhou

作　　者：冉维宇 史振华 胡歆睿 秦燕娇 蒋良兵 邓小杰 贺箫 喻美艺[1] 罗永明 RAN Weiyu;SHI Zhenhua;HU Xinrui;QIN Yanjiao;JIANG Liangbing;DENG Xiaojie;HE Xiao;YU Meiyi;LUO Yongming(Guizhou University,Guiyang,550025;Guizhou Geological Survey Institute,Guiyang,550081;Geological Museum of Guizhou,Guiyang,550081)

机构地区：[1]贵州大学,贵阳550025 [2]贵州省地质调查院,贵阳550081 [3]贵州省地质博物馆,贵阳550081

出　　处：《地质论评》2023年第6期2364-2374,共11页Geological Review

基　　金：贵州科学技术计划项目(编号:2020[4Y033],2021[463])的成果。

摘　　要：贵州安顺龙宫戴帽山是新发现的一处海生爬行动物化石产地,通过在该地区开展化石发掘与修理工作,共获取3块保存精美的海生爬行动物化石。上述3块海生爬行动物化石均归属于鳍龙超目(Sauropterygia),基于古生物地层学与沉积学的研究,判断其时代为中三叠世安尼期。化石产地的古地理位置位于扬子台地西南缘,是滇黔桂台地边缘相区内首个产出完整海生爬行动物化石的产地。笔者等的研究成果对三叠纪海生爬行动物系统演化、重塑当时古环境、中三叠世安尼期辐射强度等方面具有十分重要的意义,并为海生爬行动物的古地理分布提供了新材料。In this study,a new marine reptile fossil site was discovered in Mountain Daimao,Longgong,Anshun,Guizhou,and preliminary fossil excavation and preparation were conducted on the fossil-bearing site.There were three individual marine reptile in the fossil site,and the preliminary study found that the classification of these fossils was assigned to Sauropterygia.Based on biostratigraphy and sedimentology,it is determined that the fossil-bearing layer is in Anisian,the Middle Triassic and the paleogeographical location is in the southwest margin of the Yangtze Platform.It is the first time that well-preserved marine reptile fossils have been found at the margin of Yangtze Platform in Yunnan,Guizhou and Guangxi area.The discovery and study of this site are of great significance in the evolution of marine reptile systematics in Triassic Period,the reconstruction of paleoenvironment,and the radiation intensity during Anisian Age,the Middle Triassic,and provide new materials for the paleogeographic location.

关 键 词：海生爬行动物 中三叠世 安尼期 新苑组 安顺龙宫 

分 类 号：Q915[天文地球—古生物学与地层学]