Large Mesozoic mammals fed on young dinosaurs

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	Large Mesozoic mammals fed on young dinosaurs
	Hu, YM ; Meng, J; Wang, YQ; Li, CK
	2005-01-13
发表期刊	NATURE
卷号	433 期号:7022 页码:149-152
文章类型	Article
摘要	Mesozoic mammals are commonly portrayed as shrew- or rat-sized animals that were mainly insectivorous, probably nocturnal and lived in the shadow of dinosaurs(1-5). The largest known Mesozoic mammal represented by substantially complete remains is Repenomamus robustus, a triconodont mammal from the Lower Cretaceous of Liaoning, China(6,7). An adult individual of R. robustus was the size of a Virginia opossum. Here we report a new species of the genus, represented by a skeleton with most of the skull and postcranium preserved in articulation. The new species is 50% larger than R. robustus in skull length. In addition, stomach contents associated with a skeleton of R. robustus reveal remains of a juvenile Psittacosaurus, a ceratopsian dinosaur. Our discoveries constitute the first direct evidence that some triconodont mammals were carnivorous and fed on small vertebrates, including young dinosaurs, and also show that Mesozoic mammals had a much greater range of body sizes than previously known. We suggest that Mesozoic mammals occupied diverse niches and that some large mammals probably competed with dinosaurs for food and territory.
WOS标题词	Science & Technology
关键词[WOS]	ORIGIN
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000226252200035
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/1580
专题	古哺乳动物研究室
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 3.CUNY, Grad Sch, Biol Program, New York, NY 10016 USA 4.CUNY City Coll, New York, NY 10016 USA
推荐引用方式 GB/T 7714	Hu, YM,Meng, J,Wang, YQ,et al. Large Mesozoic mammals fed on young dinosaurs[J]. NATURE,2005,433(7022):149-152.
APA	Hu, YM,Meng, J,Wang, YQ,&Li, CK.(2005).Large Mesozoic mammals fed on young dinosaurs.NATURE,433(7022),149-152.
MLA	Hu, YM,et al."Large Mesozoic mammals fed on young dinosaurs".NATURE 433.7022(2005):149-152.

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