辽宁下白垩统沙海组和阜新组真三尖齿兽类戈壁尖齿兽科新材料

摘要：

真三尖齿兽类是了解亚洲白垩纪哺乳动物群演化和转变的重要成员之一.到目前为止沙海组和阜新组(下白垩统上部)已经发现了两种戈壁尖齿兽科以及两种三尖齿兽科的真三尖齿兽类.描述了这些地层产出的真三尖齿兽类的其他材料,包括一新属新种——常氏阜新尖齿兽(Fuxinoconodon changi gen.et sp.nov.)和一枚左下臼齿(鉴定为?Gobiconodontidae gen.et sp.indet.).这种新的真三尖齿兽类被归入戈壁尖齿兽科(Gobiconodontidae),其特征为:第一下门齿大、门齿和前臼齿的数目变少、臼齿b尖和c尖较大而独立,以及臼齿具有分别属于Gobiconodon第一代或第二代臼齿上独有特征的组合.新材料与同一地区相同层位已经报道的4种真三尖齿兽类表明,虽然科级和属级的多样性似乎已经减少,但亚洲早白垩世晚期仍存在比较多样的真三尖齿兽类.

关键词：辽宁、早白垩世、阜新组、沙海组、哺乳动物、真三尖齿兽类、戈壁尖齿兽科

所属期刊栏目：58

分类号：Q915.873(古生物学)

资助基金：中国科学院战略性先导科技专项B类编号,XDB18000000、国家自然科学基金批准号,41688103,41541015;日本学术振兴会青年科学家基金B类;We would like to express our sincere gratitude to late Z.-L;Chang Investigation Team No,107,Northeast Coalfield Geological Bureau,Fuxin,China. for his assistance,advice,and support to this study,and we dedicate this paper in his memory;We also thank S.-H;Xie for his various forms of support to this study;We also thank Y.-M;Hou IVPP for his help with micro-CT scanning of the specimen;Saegusa and T;Ikeda Museum of Nature and Human Activities,Hyogo,Japan kindly allowed us to use the AMIRA 5.3.2software at their museum;This paper was greatly improved by the comments and advice of J;Meng American Museum of Natural History and another anonymous reviewer;This study was supported by the Strategic Priority Research Program ;the National Natural Science Foundation of China ;and the Grant-in-Aid for Young Scientists

在线出版日期：2020-04-10（万方平台首次上网日期，不代表论文的发表时间）

页数：共22页

页码：45-66