PRIMITIVE FOSSIL RODENT FROM INNER-MONGOLIA AND ITS IMPLICATIONS FOR MAMMALIAN PHYLOGENY

IVPP-IR > 古低等脊椎动物研究室

	PRIMITIVE FOSSIL RODENT FROM INNER-MONGOLIA AND ITS IMPLICATIONS FOR MAMMALIAN PHYLOGENY
	MENG, J ; WYSS, AR ; DAWSON, MR ; ZHAI, RJ
	1994-07-14
发表期刊	NATURE
卷号	370 期号:6485 页码:134-136
文章类型	Article
摘要	THE evolutionary origin of rodents is obscured by the group's sudden and highly transformed first appearance in the fossil record(1,2) in the latest Paleocene. We report here the discovery of nearly complete dental remains of an extraordinary new primitive rodent from strata of transitional Paleocene-Eocene age in Inner Mongolia, China. The strikingly conservative morphological features of this taxon, Tribosphenomys minutus, gen. et sp. nov., substantially modify previous ideas about the ancestral rodent morphotype, which in turn has important implications for understanding the origin of rodents and their relationship to other eutherian mammals. This new fossil, in conjunction with recent morphological(3) and molecular(4,5) evidence confirming rodent monophyly, indicates the need for a reassessment of phylogenetic affinities among gliriform eutherians. Our results indicate a sister-group position of the new taxon to other rodents, and support the alliance of lagomorphs (rabbits) and rodents (cohort Glires). They also suggest the paraphyly of an extinct assemblage, the 'Eurymylidae', and reveal an unexpectedly complex pattern of character evolution near the ancestry of Rodentia.
WOS标题词	Science & Technology
关键词[WOS]	GUINEA-PIG
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:A1994NW80400054
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7551
专题	古低等脊椎动物研究室
作者单位	1.INST VERTEBRATE PALEONTOL & PALEOANTHROPOL, BEIJING, PEOPLES R CHINA 2.UNIV CALIF SANTA BARBARA, DEPT GEOL SCI, SANTA BARBARA, CA 93106 USA 3.CARNEGIE MUSEUM NAT HIST, VERTEBRATE PALEONTOL SECT, PITTSBURGH, PA 15213 USA
推荐引用方式 GB/T 7714	MENG, J,WYSS, AR,DAWSON, MR,et al. PRIMITIVE FOSSIL RODENT FROM INNER-MONGOLIA AND ITS IMPLICATIONS FOR MAMMALIAN PHYLOGENY[J]. NATURE,1994,370(6485):134-136.
APA	MENG, J,WYSS, AR,DAWSON, MR,&ZHAI, RJ.(1994).PRIMITIVE FOSSIL RODENT FROM INNER-MONGOLIA AND ITS IMPLICATIONS FOR MAMMALIAN PHYLOGENY.NATURE,370(6485),134-136.
MLA	MENG, J,et al."PRIMITIVE FOSSIL RODENT FROM INNER-MONGOLIA AND ITS IMPLICATIONS FOR MAMMALIAN PHYLOGENY".NATURE 370.6485(1994):134-136.