The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals

IVPP-IR > 中科院古脊椎所（2000年以后）

	The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals
	Jin, Meng ; Hu Yaoming ; Li Chuankui ; Wang Yuanqing ; Jin, M (reprint author), Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA.
	2006-09-01
发表期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
卷号	41 期号:3-4 页码:439-463
文章类型	Review
摘要	Eleven species belonging to five major groups of mammals (multituberculates, eutriconodontans, 'symmetrodontans', metatherians and eutherians) have been described from the Jehol Biota, Liaoning, China. These fossils came from three horizons of the Yixian Formation: Lujiatun (lowest), Jianshangou and Dawahgzhangzi (highest) beds. Ages and correlations of these beds are still in debate, but are generally accepted as Early Cretaceous. Biostratigraphic distributions of some Jehol mammals corroborate the Early Cretaceous age of the biota. Many species are represented by skulls and articulated skeletons, although in most cases a species is known only from a single holotype that is squashed. These fossils furnish a wealth of morphological data for Mesozoic mammals, from which large character data sets have been amassed to generate competing higher-level phylogenetic hypotheses of mammals. The Early Cretaceous divergence of eutherians is first documented as skull and skeletal fossils. The Jehol mammals indicate a diverse mammal fauna in which species range from 25 g to 14 000 g in body masses, have insectivorous, omnivorous and carnivorous diets (as reflected by their dentitions and by stomach content), and acquire scansorial, possibly arboreal and terrestrial habits (as inferred from articulated skeletons). The well-preserved material helps to clarify some anatomical uncertainties in the study of early mammals, such as an ossified Meckel's cartilage as the occupant for the internal groove on the lower jaw of some Mesozoic species and a dental formula I3-C1-P3-M4/i2-c1-p2-3-m5 for gobiconodontids as suggested by dentitions of several Jehol eutriconodontans. Evidence from cranial specimens of Jehol eutriconodontans also disfavours the brain-expansion model for the detachment of middle car ossicles from the dentary during evolution of mammals. Copyright (c) 2006 John Wiley & Sons, Ltd.; Eleven species belonging to five major groups of mammals (multituberculates, eutriconodontans, 'symmetrodontans', metatherians and eutherians) have been described from the Jehol Biota, Liaoning, China. These fossils came from three horizons of the Yixian Formation: Lujiatun (lowest), Jianshangou and Dawahgzhangzi (highest) beds. Ages and correlations of these beds are still in debate, but are generally accepted as Early Cretaceous. Biostratigraphic distributions of some Jehol mammals corroborate the Early Cretaceous age of the biota. Many species are represented by skulls and articulated skeletons, although in most cases a species is known only from a single holotype that is squashed. These fossils furnish a wealth of morphological data for Mesozoic mammals, from which large character data sets have been amassed to generate competing higher-level phylogenetic hypotheses of mammals. The Early Cretaceous divergence of eutherians is first documented as skull and skeletal fossils. The Jehol mammals indicate a diverse mammal fauna in which species range from 25 g to 14 000 g in body masses, have insectivorous, omnivorous and carnivorous diets (as reflected by their dentitions and by stomach content), and acquire scansorial, possibly arboreal and terrestrial habits (as inferred from articulated skeletons). The well-preserved material helps to clarify some anatomical uncertainties in the study of early mammals, such as an ossified Meckel's cartilage as the occupant for the internal groove on the lower jaw of some Mesozoic species and a dental formula I3-C1-P3-M4/i2-c1-p2-3-m5 for gobiconodontids as suggested by dentitions of several Jehol eutriconodontans. Evidence from cranial specimens of Jehol eutriconodontans also disfavours the brain-expansion model for the detachment of middle car ossicles from the dentary during evolution of mammals. Copyright (c) 2006 John Wiley & Sons, Ltd.
关键词	Jehol Biota Mammals Cretaceous Eutriconodontans Dentition China
WOS标题词	Science & Technology ; Physical Sciences
URL	查看原文
关键词[WOS]	OSSIFIED MECKELS CARTILAGE ; HOME RANGE SIZE ; BODY-SIZE ; MIDDLE-EAR ; NORTHEASTERN CHINA ; ENERGETIC CONSTRAINTS ; FEATHERED DINOSAURS ; TRICONODONT MAMMALS ; JIUFOTANG FORMATION ; EUTHERIAN MAMMALS
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000241039300013
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3427
专题	中科院古脊椎所（2000年以后）
通讯作者	Jin, M (reprint author), Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA.
作者单位	1.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Jin, Meng,Hu Yaoming,Li Chuankui,et al. The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals[J]. GEOLOGICAL JOURNAL,2006,41(3-4):439-463.
APA	Jin, Meng,Hu Yaoming,Li Chuankui,Wang Yuanqing,&Jin, M .(2006).The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals.GEOLOGICAL JOURNAL,41(3-4),439-463.
MLA	Jin, Meng,et al."The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals".GEOLOGICAL JOURNAL 41.3-4(2006):439-463.