中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 古脊椎动物与古人类研究所
  3. 中国科学院古脊椎动物与古人类研究所
Separating sexual dimorphism from other morphological variation in a specimen complex of fossil marine reptiles (Reptilia, Ichthyosauriformes, Chaohusaurus)

文献类型：期刊论文

作者Motani, Ryosuke1; Huang, Jiandong2; Jiang, Da-Yong3,4; Tintori, Andrea5; Rieppel, Olivier6; You, Hailu7; Hu, Yuan-Chao2; Zhang, Rong2
刊名SCIENTIFIC REPORTS
出版日期2018-10-08
卷号8页码:14
ISSN号2045-2322
DOI10.1038/s41598-018-33302-4
通讯作者Motani, Ryosuke(rmotani@ucdavis.edu) ; Huang, Jiandong(jiandongh2008@163.com)
英文摘要The Early Triassic Chaohu Fauna from Anhui Province, China, contains the oldest record of Mesozoic marine reptiles, such as Cartorhynchus and Sclerocormus. Most specimens from the fauna belong to the ichthyosauriform Chaohusaurus, more specifically resembling C. chaoxianensis. However, a wide range of morphological variation exists within about 40 skeletons that have been prepared, likely reflecting mixed signals from both sexual and taxonomic differences. We test whether the sexual and taxonomic signals are separable based on quantification, aided by the knowledge of sexual dimorphism in extant marine tetrapods. There are two different suites of dimorphism that divide the specimens differently from each other yet consistently within each suite, resulting in four morphotypes in combination, likely representing two sexes of two taxa. Presumed males have larger 'organ of prehension' sensu Darwin, specifically limbs in the present case, for a given body length. This sexing criterion is supported by the only specimen of a gravid female, which belongs to the morphotype with short limbs. Males also have larger skulls for the trunk length compared to females. This study demonstrates that sexual and taxonomic signals are separable in fossil reptiles, with a sufficient sample size and careful analyses.
WOS关键词BOTTLE-NOSED DOLPHINS ; GEOGRAPHIC-VARIATION ; FRANCISCANA DOLPHIN ; EXTERNAL MORPHOLOGY ; TURSIOPS-TRUNCATUS ; SEA-SNAKE ; SELECTION ; GROWTH ; BIOLOGY ; FLORIDA
资助项目Ministry of Land and Resources of China[201511054] ; Department of Land and Resources of Anhui Province[2016-k-5] ; National Natural Science Foundation of China[41402005] ; National Natural Science Foundation of China[41372016] ; National Natural Science Foundation of China[40920124002] ; Ministry of Science and Technology of China[2016YFC0503301]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000446577500055
出版者NATURE PUBLISHING GROUP
资助机构Ministry of Land and Resources of China ; Department of Land and Resources of Anhui Province ; National Natural Science Foundation of China ; Ministry of Science and Technology of China
源URL[http://119.78.100.205/handle/311034/9004]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Motani, Ryosuke; Huang, Jiandong
作者单位1.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA
2.Anhui Geol Museum, Dept Res, Jiahe Rd 999, Hefei 230031, Anhui, Peoples R China
3.Peking Univ, Dept Geol, Minist Educ, Lab Orogen Belt & Crustal Evolut, Beijing 100871, Peoples R China
4.Peking Univ, Geol Museum, Beijing 100871, Peoples R China
5.Univ Milan, Dipartimento Sci Terra, Via Mangiagalli 34, I-20133 Milan, Italy
6.Field Museum, Integrat Res Ctr, Chicago, IL 60605 USA
7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, 142 Xizhimenwai St, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Motani, Ryosuke,Huang, Jiandong,Jiang, Da-Yong,et al. Separating sexual dimorphism from other morphological variation in a specimen complex of fossil marine reptiles (Reptilia, Ichthyosauriformes, Chaohusaurus)[J]. SCIENTIFIC REPORTS,2018,8:14.
APA Motani, Ryosuke.,Huang, Jiandong.,Jiang, Da-Yong.,Tintori, Andrea.,Rieppel, Olivier.,...&Zhang, Rong.(2018).Separating sexual dimorphism from other morphological variation in a specimen complex of fossil marine reptiles (Reptilia, Ichthyosauriformes, Chaohusaurus).SCIENTIFIC REPORTS,8,14.
MLA Motani, Ryosuke,et al."Separating sexual dimorphism from other morphological variation in a specimen complex of fossil marine reptiles (Reptilia, Ichthyosauriformes, Chaohusaurus)".SCIENTIFIC REPORTS 8(2018):14.

入库方式： OAI收割

来源：古脊椎动物与古人类研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。