Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China

doi:10.1139/cjes-2019-0231

IVPP-IR

	Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China
	Hendrickx, Christophe 1,8; Stiegler, Josef 2; Currie, Philip J.3; Han, Fenglu4 ; Xu, Xing5,6 ; Choiniere, Jonah N.1; Wu, Xiao-Chun7
	2020-09-01
发表期刊	CANADIAN JOURNAL OF EARTH SCIENCES
ISSN	0008-4077
卷号	57 期号:9 页码:1127-1147
摘要	The dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D- to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labio-lingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.
关键词	tooth crown denticle dinosaur theropod
DOI	10.1139/cjes-2019-0231
关键词[WOS]	MAJUNGASAURUS-CRENATISSIMUS THEROPODA ; CANADIAN DINOSAUR PROJECT ; SHISHUGOU FORMATION ; ALBERTOSAURUS-SARCOPHAGUS ; TYRANNOSAURUS-REX ; TEETH ; XINJIANG ; ABELISAURIDAE ; IDENTIFICATION ; HETERODONTY
收录类别	SCI
语种	英语
资助项目	University Research Committee of the University of the Witwatersrand ; National Science Foundation East Asia and Pacific Summer Institutes Office of International Science and Engineering[1311000]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000563781400007
出版者	CANADIAN SCIENCE PUBLISHING
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/18001
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Hendrickx, Christophe
作者单位	1.Univ Witwatersrand, Evolutionary Studies Inst, Private Bag 3, ZA-2050 Johannesburg, South Africa 2.George Washington Univ, Dept Biol Sci, Washington, DC 20052 USA 3.Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada 4.China Univ Geosci, Sch Earth Sci, Wuhan, Peoples R China 5.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, 142 Xiwai St, Beijing 100044, Peoples R China 6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 142 Xiwai St, Beijing 100044, Peoples R China 7.Canadian Museum Nat, POB 3443, Ottawa, ON K1P 6P4, Canada 8.CONICET Fdn Miguel Lillo, Unidad Ejecutora Lillo, Miguel Lillo 251, RA-4000 San Miguel De Tucuman, Tucuman, Argentina
推荐引用方式 GB/T 7714	Hendrickx, Christophe,Stiegler, Josef,Currie, Philip J.,et al. Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China[J]. CANADIAN JOURNAL OF EARTH SCIENCES,2020,57(9):1127-1147.
APA	Hendrickx, Christophe.,Stiegler, Josef.,Currie, Philip J..,Han, Fenglu.,Xu, Xing.,...&Wu, Xiao-Chun.(2020).Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China.CANADIAN JOURNAL OF EARTH SCIENCES,57(9),1127-1147.
MLA	Hendrickx, Christophe,et al."Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China".CANADIAN JOURNAL OF EARTH SCIENCES 57.9(2020):1127-1147.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
cjes-2019-0231.pdf（24969KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载