Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Omnogovi Aimag, Mongolia

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	Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Omnogovi Aimag, Mongolia
	Pei, Rui 1,2; Norell, Mark A.2; Barta, Daniel E.2,3; Bever, G. S.2,4; Pittman, Michael 5; Xu, Xing6
	2017-12-15
发表期刊	AMERICAN MUSEUM NOVITATES
ISSN	0003-0082
期号	3889 页码:1-48
文章类型	Article
摘要	A new troodontid dinosaur, Almas ukhaa, from the Late Cretaceous deposits of the Djadokhta Formation at Ukhaa Tolgod, Mongolia, is described here. The holotype specimen (IGM 100/1323) comprises an almost complete and articulated cranium and partial articulated postcranial skeleton. This specimen has a small body size and a short snout as in basal paravians, but it exhibits a number of derived troodontid features that differentiate Almas ukhaa from the Early Cretaceous troodontids reported from China and unite this new taxon with other Late Cretaceous troodontids. Relative to other troodontids, Almas ukhaa is autapomorphic in the presence of a posteriorly curved pterygoid flange, absence of a lateral groove on the anterior part of the dentary, presence of a distinct spikelike process on the ischium, and elongate chevrons. The eggshell associated with IGM 100/1323 can be assigned to Prismatoolithidae indet. based on the smooth surface, eggshell thickness, and microstructural characteristics, and also preserves attributes similar to Protoceratopsidovum minimum. A unique relationship between Byronosaurus and the perinate troodontids IGM 100/972 and IGM 100/974 is no longer supported based on the new observations of Almas ukhaa and Gobivenator.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	STENONYCHOSAURUS-INEQUALIS SAURISCHIA ; REPUBLIC-OF-CHINA ; THEROPOD DINOSAUR ; DROMAEOSAURID SYSTEMATICS ; MOSAIC EVOLUTION ; YIXIAN FORMATION ; OLDMAN FORMATION ; ARCHAEOPTERYX ; BIRDS ; ORIGIN
收录类别	SCI
语种	英语
项目资助者	Division of Paleontology, American Museum of Natural History ; Newt and Callista Gingrich Fund ; Macaulay family ; Columbia University ; University of Hong Kong ; Richard Gilder Graduate School Fellowship ; National Science Foundation of China(41688103) ; University of Hong Kong Faculty of Science
WOS研究方向	Biodiversity & Conservation ; Zoology
WOS类目	Biodiversity Conservation ; Zoology
WOS记录号	WOS:000418272600001
出版者	AMER MUSEUM NATURAL HISTORY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/8708
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Pei, Rui
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 3.Amer Museum Nat Hist, Richard Gilder Grad Sch, New York, NY 10024 USA 4.Johns Hopkins Univ, Sch Med, Ctr Funct Anat & Evolut, Baltimore, MD USA 5.Univ Hong Kong, Vertebrate Palaeontol Lab, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Pei, Rui,Norell, Mark A.,Barta, Daniel E.,et al. Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Omnogovi Aimag, Mongolia[J]. AMERICAN MUSEUM NOVITATES,2017(3889):1-48.
APA	Pei, Rui,Norell, Mark A.,Barta, Daniel E.,Bever, G. S.,Pittman, Michael,&Xu, Xing.(2017).Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Omnogovi Aimag, Mongolia.AMERICAN MUSEUM NOVITATES(3889),1-48.
MLA	Pei, Rui,et al."Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Omnogovi Aimag, Mongolia".AMERICAN MUSEUM NOVITATES .3889(2017):1-48.

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