A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China

IMR OpenIR

	A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China
其他题名	A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China
	Hou Shilin 1; Meng Jin 3
	2014
发表期刊	CHINESE SCIENCE BULLETIN
ISSN	1001-6538
卷号	59 期号:5-6 页码:546-553
摘要	A new genus and species of eutriconodont mammal, Chaoyangodens lii gen. et sp. nov., from the Dawangzhangzi bed of Yixian Formation, Lingyuan, Liaoning, is reported. The new species has a tooth formula I5-C1-P1-M3/i4-c1-p1-m4, unique among eutriconodonts in having only one premolar in lower and upper jaws, respectively, and a distinctive diastema between the canine and the premolar. Its simple incisors and reduced premolars show a mosaic combination of primitive and derived features. This new taxon adds to the diverse group of Jehol eutriconodonts. Among the known species from at least three horizons, there seems no evolutionary trend in morphology that is recognizable, except for that larger species are all from the Lujiatun bed of the Yixian Fm. A thorough and systematic analysis involving all the Jehol eutriconodonts is needed to understand their phylogenetic relationships.
其他摘要	A new genus and species of eutriconodont mammal,Chaoyangodens lii gen.et sp.nov.,from the Dawangzhangzi bed of Yixian Formation,Lingyuan,Liaoning,is reported.The new species has a tooth formula I5-C1-P1-M3/i4-c1-p1-m4,unique among eutriconodonts in having only one premolar in lower and upper jaws,respectively,and a distinctive diastema between the canine and the premolar.Its simple incisors and reduced premolars show a mosaic combination of primitive and derived features.This new taxon adds to the diverse group of Jehol eutriconodonts.Among the known species from at least three horizons,there seems no evolutionary trend in morphology that is recognizable,except for that larger species are all from the Lujiatun bed of the Yixian Fm.A thorough and systematic analysis involving all the Jehol eutriconodonts is needed to understand their phylogenetic relationships.
关键词	OSSIFIED MECKELS CARTILAGE TRICONODONT MAMMALS MIDDLE-EAR NORTHEAST CHINA AGE EVOLUTION GOBICONODON DINOSAURS ALBERTA ORIGIN Eutriconodonta Mammalia Jehol Biota Early Cretaceous Liaoning China
收录类别	CSCD
语种	英语
资助项目	[National Basic Research Program of China] ; [Public Science and Technology Research Funds Projects of Land and Resources] ; [National Natural Science Foundation of China] ; [American Museum of Natural History, New York]
CSCD记录号	CSCD:5056376
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/145886
专题	中国科学院金属研究所
作者单位	1.东北大学 2.中国科学院金属研究所 3.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 4.中国科学院
推荐引用方式 GB/T 7714	Hou Shilin,Meng Jin. A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China[J]. CHINESE SCIENCE BULLETIN,2014,59(5-6):546-553.
APA	Hou Shilin,&Meng Jin.(2014).A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China.CHINESE SCIENCE BULLETIN,59(5-6),546-553.
MLA	Hou Shilin,et al."A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China".CHINESE SCIENCE BULLETIN 59.5-6(2014):546-553.