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

doi:10.1093/nsr/nwx145

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	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
	2018-09-01
发表期刊	NATIONAL SCIENCE REVIEW
ISSN	2095-5138
卷号	5 期号:5 页码:721-727
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).
关键词	Poaceae dinosaur phytolith epidermis Early Cretaceous
DOI	10.1093/nsr/nwx145
关键词[WOS]	SILICA PHYTOLITHS ; GRASSES ; AGE ; EVOLUTION ; RICE ; WET
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41472020] ; National Basic Research Program of China[2015CB953803] ; National Natural Science Foundation of China[41472145]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000448667000022
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/9189
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.

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