陕西汉中梁山乐平统底部王坡页岩中的腕足动物化石  

BRACHIOPODS FROM THE WANGPO SHALE(BASAL LOPINGIAN,PERMIAN)OF LIANGSHAN,SOUTHERN SHAANXI PROVINCE,CENTRAL CHINA

作　　者：郭俊锋[1,2] 李勇[1] 肖良[1] 李相传[1] 姚肖永[1] 郑亚娟[1] 周雪柔 

机构地区：[1]长安大学地球科学与资源学院及国土资源部岩浆作用成矿与找矿重点实验室,陕西西安710054 [2]美国弗吉尼亚理工学院暨州立大学地球科学系,弗吉尼亚州布莱克斯堡24061 [3]中国地质大学长城学院地球科学与资源系,河北保定071000

出　　处：《古生物学报》2016年第2期192-206,共15页Acta Palaeontologica Sinica

基　　金：国家自然科学基金项目(No.41472015);中国国家留学基金管理委员会(No.201306565037);中央高校基本科研业务费专项基金(No.2013G3274021;No.2014G3272013)资助

摘　　要：报道陕西汉中梁山瓜德鲁普统与乐平统界线附近王坡页岩(斑脱岩)中的腕足动物化石4属6种:Neochonetes(Huangichonetes)substrophomenoides,Orthothetina ruber,O.regularis,O.sp.,?Martinia orbicularis,和Hustedia indica。该腕足动物群以吴家坪期暖水型腕足动物为主,既含有瓜德鲁普世孑遗分子,又具有乐平世吴家坪期新兴分子,显示了过渡类型的特点。陕南吴家坪期初期腕足动物化石群的发现,对识别瓜德鲁普世末期灭绝事件后腕足动物在吴家坪期初期的多样性和乐平世初腕足动物的复苏和辐射提供了重要的化石信息。This paper reports a brachiopod fauna comprising four genera and six species from the Wangpo Shale（bentonite）in the basal Wujiaping Formation near the Guadalupian-Lopingian boundary at Liangshan,Hanzhong,Shaanxi Province.This fauna includes：Neochonetes（Huangichonetes）substrophomenoides, Orthothetina ruber, O.regularis,O.sp.,？Martinia orbicularis,and Hustedia indica.It is characteristically dominated by the Wuchiapingian warm-water species.However, it also exhibits characters of a transitional fauna between the Late Guadalupian（Capitanian）and the Lopingian（Wuchiapingian）brachiopod assemblages. The discovery of the present brachiopod fauna from the early Wuchiapingian in southern Shaanxi provides critical paleontological data to understand brachiopod biodiversity and recovery during the earliest Wuchiapingian after the end-Guadalupian extinction in South China.

关 键 词：腕足动物 王坡页岩 乐平统 陕西梁山 

分 类 号：Q915.2[天文地球—古生物学与地层学]