摘要
吉林省中部地区白垩系泉头组中保存了一个典型的脊椎动物化石群,该动物群以基干鸟脚类娇小长春龙为代表,还包括禽龙类、角龙类、兽脚类、蜥脚类、鳄类、真兽类,以及恐龙蛋等8类陆生脊椎动物化石,笔者将其定名为长春龙动物群。为了研究该动物群的物种多样性,笔者对该动物群中的兽脚类牙齿材料进行了较为详细系统的研究。我们将测量获取的化石特征数据绘制成二维散点图进行分析,并结合牙齿特征开展标本的骨骼形态学对比与鉴定。研究发现在该动物群中至少存在4种不同类型兽脚类恐龙,分别为跃龙类、驰龙类、暴龙类和未定类。其中,驰龙类材料在松辽盆地中生代地层中是首次发现。长春龙动物群中兽脚类的分异性,从侧面说明了长春龙动物群应为一个物种组成十分丰富的脊椎动物群落。
A typical vertebrate assemblage has been discovered in the Cretaceous Quantou Formation in Changchun area of Jilin Province.It is represented by eight main fossil vertebrate groups,including the basal Ornithopoda,Iguanodontia,Ceratopsia,Theropoda,Sauropoda,Crocodilia,Eutheria and dinosaur eggs.The basal ornithopod Changchunsaurus parvus is the most dominant taxon,with a large number of fossil bones.Herein,we define this assemblage as“Changchunsaurus Fauna”.In order to study the diversity of this fauna,the theropod dental materials in our collections have been studied in detail.The selected measurement data from the specimens are plotted on a two-dimensional scatter diagram for analysis,and the morphological comparison and identification of the specimens are carried out in combination with the features of the teeth.The study found that there are at least four different types of theropods in the fauna,respectively allosaurs,dromaeosaurs,tyrannosaurs,and a large indeterminate theropod.Among them,dromaeosaurs are reported for the first time in the Mesozoic strata in Songliao basin.The high diversity of theropods in Changchunsaurus Fauna indicates that this assemblage should be a vertebrate community with a rich species composition.
作者
王珑翰
李晓波
陈军
Wang Longhan;Li Xiaobo;Chen Jun(College of Earth Sciences/Dinosaur Evolution Research Centre/International Centre of Future Science,Jilin University,Changchun 130061,China;Laboratory of Philosophy and Social Sciences,Ministry of Education(Biological Archaeology Laboratory of Jilin University),Changchun 130012,China)
出处
《吉林大学学报（地球科学版）》
CAS
CSCD
北大核心
2022年第6期1844-1854,共11页
Journal of Jilin University：Earth Science Edition
基金
中国地质调查局项目(WT2021036B)
科技部国家自然科技资源共享平台项目(3D5201540506)
国家自然科学基金项目(41688103)
吉林大学未来科学国际合作联合实验室基金项目(419020201280)
吉林大学交叉学科团队资助计划项目(10183JXTD202006)
作者简介
王珑翰(1998—),男,博士研究生,主要从事古脊椎动物学方面的研究,E-mail:wanglh20@mails.jlu.edu.cn;通信作者:陈军(1977—),男,苗族,研究馆员,主要从事古脊椎动物学及博物馆内容设计方面的研究,E-mail:cj@jlu.edu.cn
