A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia

IVPP-IR > 中科院古脊椎所（2000年以后）

	A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia
	Xu Xing1 ; Tan Qingwei 2; Gao Yilong 3; Bao Zhiqiang 3; Yin Zhigang 3; Guo Bin 3; Wang Junyou 4; Tan Lin 2; Zhang Yuguang 5; Xing Hai 5
	2018
发表期刊	sciencebulletin
ISSN	2095-9273
卷号	63 期号:9 页码:556
摘要	A presumably mostly quadrupedal ankylopollexian iguanodontian, Bayannurosaurus perfectus gen. et sp. nov., is reported here, and is represented by an excellently well-preserved skeleton from the Lower Cretaceous Bayingebi Formation of Inner Mongolia, China. The diagnosis of the taxon includes several autapomorphies, notably a dorsally directed, strap-like posterodorsal process of the jugal and a horizontally oriented preacetabular process of the ilium. The nearly complete caudal series retains eight posterior-most caudals with procoelous, trapezoidal centra in dorsal view, and the last three caudals are fully fused. The discovery of B. perfectus opens a critical new window on the early evolution and intercontinental dispersal of Iguanodontia. The skeleton displays a transitional morphology between non-hadrosauriform ankylopollexians and Hadrosauriformes. A phylogenetic analysis indicates that Bayannurosaurus is positioned higher on the tree than Hypselospinus , but below Ouranosaurus just outside of Hadrosauriformes. The tree topology of Iguanodontia with temporal and spatial constraints reveals a possible biogeographic scenario supported by the statistical dispersal-vicariance analysis: around the J
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/13780
专题	中科院古脊椎所（2000年以后）中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.Long Hao Institute of Geology and Paleontology 3.Bureau of Land and Resources of Bayannur 4.Inner Mongolia Museum of Natural History 5.Beijing Museum of Natural History, Beijing Academy of Science and Technology
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Xu Xing,Tan Qingwei,Gao Yilong,et al. A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia[J]. sciencebulletin,2018,63(9):556.
APA	Xu Xing.,Tan Qingwei.,Gao Yilong.,Bao Zhiqiang.,Yin Zhigang.,...&Xing Hai.(2018).A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia.sciencebulletin,63(9),556.
MLA	Xu Xing,et al."A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia".sciencebulletin 63.9(2018):556.

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