Braincase Anatomy of the Basal Theropod Sinosaurus from the Early Jurassic of China

CORC > 古脊椎动物与古人类研究所 > 中国科学院古脊椎动物与古人类研究所 > 古低等脊椎动物研究室

	Braincase Anatomy of the Basal Theropod Sinosaurus from the Early Jurassic of China
	Xing Lida 1; Paulina-Carabajal, Ariana 2; Currie, Philip J.3; Xu Xing4 ; Zhang Jianping 1; Wang Tao 5; Burns, Michael E.3; Dong Zhiming 4
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2014-12-01
卷号	88 期号:6 页码:1653-1664
关键词	Neuroanatomy Paleoneurology Dinosaur Inner Ear Pneumaticity Early Jurassic Yunnan
文献子类	Article
英文摘要	The neuroanatomy of the mid-sized theropod Sinosaurus triassicus from the Lower Jurassic Lufeng Formation, Lufeng Basin in Yunnan Province, China was studied using X-ray computed tomography. The braincase is characterized by a large supraoccipital knob that is capped by a posterior projection of the parietal and two external foramina for the caudal middle cerebral vein, which is completely enclosed by the supraoccipital. The basicranium has well defined, short basipterygoid processes that project ventral to the basal tubera. The basisphenoid is expanded, projects posteroventrally, and is pierced by four pneumatic recesses. The endocranial morphology resembles that observed in other basal theropodsin particular some allosauroidsand has a strongly marked pontine flexure and a large dorsal expansion. The inner ear morphology is also similar to that observed in other basal theropods, with slender semicircular canals. The anterior semicircular canal is 20% larger than the posterior semicircular canal, and the angle formed between them is less than 90 degrees when seen in dorsal view.
WOS关键词	COMPUTED-TOMOGRAPHY ; CRANIAL ENDOCAST ; DINOSAURIA ; ABELISAURIDAE ; PATAGONIA ; BIRDS
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000346917000002
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7378]
专题	古脊椎动物与古人类研究所_古低等脊椎动物研究室
作者单位	1.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 2.Consejo Nacl Invest Cient & Tecn, Museo Carmen Funes, RA-8318 Neuquen, Argentina 3.Univ Alberta, Edmonton, AB T6G 2E9, Canada 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 5.Lufeng Land & Resources Bur, Lufeng 651200, Peoples R China
推荐引用方式 GB/T 7714	Xing Lida,Paulina-Carabajal, Ariana,Currie, Philip J.,et al. Braincase Anatomy of the Basal Theropod Sinosaurus from the Early Jurassic of China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2014,88(6):1653-1664.
APA	Xing Lida.,Paulina-Carabajal, Ariana.,Currie, Philip J..,Xu Xing.,Zhang Jianping.,...&Dong Zhiming.(2014).Braincase Anatomy of the Basal Theropod Sinosaurus from the Early Jurassic of China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,88(6),1653-1664.
MLA	Xing Lida,et al."Braincase Anatomy of the Basal Theropod Sinosaurus from the Early Jurassic of China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 88.6(2014):1653-1664.