Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China

doi:10.1093/nsr/nwx145

	Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China
	Wu, Yan 1,2; You, Hai-Lu1,2 ; Li, Xiao-Qiang 1,2
刊名	NATIONAL SCIENCE REVIEW
	2018-09-01
卷号	5 期号:5 页码:721-727
关键词	Poaceae dinosaur phytolith epidermis Early Cretaceous
ISSN号	2095-5138
DOI	10.1093/nsr/nwx145
通讯作者	You, Hai-Lu(youhailu@ivpp.ac.cn)
英文摘要	Grasses (Poaceae) are human's most important crop plants and among the most important extant clades of vascular plants. However, the origin and early evolution of grasses are controversial, with estimated ages from molecular dating ranging between 59 and 129 Ma (million years ago). Here we report the discovery of basalmost grasses from the late Early Cretaceous (Albian, 113-101 Ma) of China based on microfossils (silicified epidermal pieces and phytoliths) extracted from a special structure along the dentition of a basal hadrosauroid (duck-billed dinosaur). Thus, this discovery represents the earliest known grass fossils, and is congruent with previous estimations on grass origin and early evolution calibrated by oldest known fossil grasses, highlighting the role of fossils in molecular dating. This discovery also indicates deep-diverging grasses probably gained broad distribution across both Laurasian and Gondwanan continents during the Barremian (129-125 Ma).
资助项目	National Natural Science Foundation of China[41472145] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41472020] ; National Basic Research Program of China[2015CB953803]
WOS关键词	SILICA PHYTOLITHS ; GRASSES ; AGE ; EVOLUTION ; RICE ; WET
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000448667000022
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/9188]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	You, Hai-Lu
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yan,You, Hai-Lu,Li, Xiao-Qiang. Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China[J]. NATIONAL SCIENCE REVIEW,2018,5(5):721-727.
APA	Wu, Yan,You, Hai-Lu,&Li, Xiao-Qiang.(2018).Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China.NATIONAL SCIENCE REVIEW,5(5),721-727.
MLA	Wu, Yan,et al."Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China".NATIONAL SCIENCE REVIEW 5.5(2018):721-727.