Osteology of Yunguisaurus Cheng et al., 2006 (Reptilia; Sauropterygia), a Triassic pistosauroid from China

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	Osteology of Yunguisaurus Cheng et al., 2006 (Reptilia; Sauropterygia), a Triassic pistosauroid from China
	Sato, Tamaki 1,4; Cheng, Yen-Nien 2,3; Wu, Xiao-Chun 4; Li, Chun 5
刊名	PALEONTOLOGICAL RESEARCH
	2010-09-30
卷号	14 期号:3 页码:179-195
关键词	Functional Morphology Phylogeny Pistosauroidea Plesiosauria Triassic
文献子类	Article
英文摘要	Triassic pistosauroids are closely related to the Plesiosauria which flourished later in the Mesozoic, but their fossil record has been poor due to the fragmentary nature of the known specimens. Yunguisaurus liae Cheng et al (2006) (Reptilia, Sauropterygia) from China was the first Triassic pistosauroid represented by an almost complete skeleton, and we provide a full description of the holotype specimen based on the result of complete preparation of the skull and posteranium. A revised diagnosis characterizes Y liae by a mixture of primitive and derived features for sauropterygians, such as the high number of cervical vertebrae (similar to the Plesiosauria) with large zygapophyses (shared with basal sauropterygians). The holotype skeleton likely represents a juvenile individual. In a revised phylogeny, relationships among the Triassic pistosauroids are fully resolved but weakly supported; the revised phylogeny differs from the existing hypothesis on a sauropterygian relationship, likely due to the previous reliance on fragmentary taxa. The long neck and hyperphalangy give an impression that Yunguisaurus is very "plesiosaurian," but detailed comparison revealed morphological differences in various parts of the postcranial. These differences, in combination with the revised phylogenetic hypothesis, suggest that Yunguisaurus was not necessarily comparable to the Plesiosauria in terms of body plan and mode of swimming.
WOS关键词	CRANIAL ANATOMY ; PLESIOSAUR ; INTERRELATIONSHIPS ; SASKATCHEWAN ; DIAPSIDA ; SKELETON ; ENGLAND ; CANADA ; NEVADA ; ORIGIN
WOS研究方向	Paleontology
语种	英语
WOS记录号	WOS:000282619000002
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7635]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Tokyo Gakugei Univ, Koganei, Tokyo 1848501, Japan 2.Natl Museum Nat Sci, Taichung 40453, Taiwan 3.Natl Cheng Kung Univ, Dept Earth Sci, Tainan 701, Taiwan 4.Canadian Museum Nat, Ottawa, ON K1P 6P4, Canada 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 10004, Peoples R China
推荐引用方式 GB/T 7714	Sato, Tamaki,Cheng, Yen-Nien,Wu, Xiao-Chun,et al. Osteology of Yunguisaurus Cheng et al., 2006 (Reptilia; Sauropterygia), a Triassic pistosauroid from China[J]. PALEONTOLOGICAL RESEARCH,2010,14(3):179-195.
APA	Sato, Tamaki,Cheng, Yen-Nien,Wu, Xiao-Chun,&Li, Chun.(2010).Osteology of Yunguisaurus Cheng et al., 2006 (Reptilia; Sauropterygia), a Triassic pistosauroid from China.PALEONTOLOGICAL RESEARCH,14(3),179-195.
MLA	Sato, Tamaki,et al."Osteology of Yunguisaurus Cheng et al., 2006 (Reptilia; Sauropterygia), a Triassic pistosauroid from China".PALEONTOLOGICAL RESEARCH 14.3(2010):179-195.