A new symmetrodont mammal (Trechnotheria: Zhangheotheriidae) from the Early Cretaceous of China and trechnotherian character evolution

doi:10.1038/srep26668

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	A new symmetrodont mammal (Trechnotheria: Zhangheotheriidae) from the Early Cretaceous of China and trechnotherian character evolution
	Bi, Shundong 1,2; Zheng, Xiaoting 3,4; Meng, Jin 2,5; Wang, Xiaoli 3,4; Robinson, Nicole 1; Davis, Brian 6
刊名	SCIENTIFIC REPORTS
	2016-05-24
卷号	6
DOI	10.1038/srep26668
文献子类	Article
英文摘要	We report the discovery of Anebodon luoi, a new genus and species of zhangheotheriid symmetrodont mammal from the Lujiatun site of the Lower Cretaceous Yixian Formation, China. The fossil is represented by an associated partial skull and dentaries with a nearly complete dentition, and with a dental formula of I4/3 C1/1 P5/4 M3/4. This new taxon lacks the high molar count typical of derived symmetrodonts, differing from the well-represented zhangheotheriids Zhangheotherium and Maotherium in having a postcanine dental formula that resembles more primitive tinodontid symmetrodonts on the one hand, and sister taxa to therians such as Peramus on the other. Upper and lower distal premolars are strongly molariform and are captured undergoing replacement, clarifying positional homology among related taxa. We also describe the rostrum and, for the first time in a symmetrodont, much of the orbital mosaic. Importantly, our new taxon occupies a basal position within the Zhangheotheriidae and permits discussion of trechnotherian character evolution, ultimately shedding additional light on the evolution of therians.
WOS关键词	JURASSIC MAMMALS ; WESTERN SIBERIA ; SOUTH-AMERICA ; ADAPTATIONS ; ENGLAND ; SKULL
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000376390100001
资助机构	National Basic Research Program of China (973 program)(2012CB821906) ; National Science Foundation of China(41128002) ; Hundred Talents Programs of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7101]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Indiana Univ Penn, Dept Biol, Indiana, PA 15705 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.Shandong Tianyu Museum Nat, Pingyi 273300, Shandong, Peoples R China 4.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China 5.Amer Museum Nat Hist, Div Paleontol, Cent Pk West & 79th St, New York, NY 10024 USA 6.Univ Louisville, Dept Anat Sci & Neurobiol, 511 S Floyd St, Louisville, KY 40202 USA
推荐引用方式 GB/T 7714	Bi, Shundong,Zheng, Xiaoting,Meng, Jin,et al. A new symmetrodont mammal (Trechnotheria: Zhangheotheriidae) from the Early Cretaceous of China and trechnotherian character evolution[J]. SCIENTIFIC REPORTS,2016,6.
APA	Bi, Shundong,Zheng, Xiaoting,Meng, Jin,Wang, Xiaoli,Robinson, Nicole,&Davis, Brian.(2016).A new symmetrodont mammal (Trechnotheria: Zhangheotheriidae) from the Early Cretaceous of China and trechnotherian character evolution.SCIENTIFIC REPORTS,6.
MLA	Bi, Shundong,et al."A new symmetrodont mammal (Trechnotheria: Zhangheotheriidae) from the Early Cretaceous of China and trechnotherian character evolution".SCIENTIFIC REPORTS 6(2016).