Stable Isotopes Reveal Rapid Enamel Elongation (Amelogenesis) Rates for the Early Cretaceous Iguanodontian Dinosaur Lanzhousaurus magnidens

doi:10.1038/s41598-017-15653-6

IVPP-IR > 中科院古脊椎所（2000年以后）

	Stable Isotopes Reveal Rapid Enamel Elongation (Amelogenesis) Rates for the Early Cretaceous Iguanodontian Dinosaur Lanzhousaurus magnidens
	Suarez, Celina A.1; You, Hai-Lu 2,3; Suarez, Marina B.4; Li, Da-Qing 5; Trieschmann, J. B.1
	2017-11-10
发表期刊	SCIENTIFIC REPORTS
卷号	7
文章类型	Article
摘要	Lanzhousaurus magnidens, a large non-hadrosauriform iguanodontian dinosaur from the Lower Cretaceous Hekou Group of Gansu Province, China has the largest known herbivorous dinosaur teeth. Unlike its hadrosauriform relatives possessing tooth batteries of many small teeth, Lanzhousaurus utilized a small number (14) of very large teeth (similar to 10 cm long) to create a large, continuous surface for mastication. Here we investigate the significance of Lanzhousaurus in the evolutionary history of iguanodontian-hadrosauriform transition by using a combination of stable isotope analysis and CT imagery. We infer that Lanzhousaurus had a rapid rate of tooth enamel elongation or amelogenesis at 0.24 mm/day with dental tissues common to other Iguanodontian dinosaurs. Among ornithopods, high rates of amelogenesis have been previously observed in hadrosaurids, where they have been associated with a sophisticated masticatory apparatus. These data suggest rapid amelogenesis evolved among non-hadrosauriform iguanodontians such as Lanzhousaurus, representing a crucial step that was exapted for the evolution of the hadrosaurian feeding mechanism.
WOS标题词	Science & Technology
DOI	10.1038/s41598-017-15653-6
关键词[WOS]	TOOTH ENAMEL ; FOSSIL RECORD ; PHOSPHATE ; ECOLOGY ; SEASONALITY ; EVOLUTION ; APATITE ; LINES ; WATER
收录类别	SCI
语种	英语
项目资助者	University of Kansas Department of Geosciences ; University of Arkansas Sponsored Research Programs ; CIMA LSAMP research program ; National Natural Science Foundation of China(41688103 ; 41472020)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000414917800059
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7984
专题	中科院古脊椎所（2000年以后）
作者单位	1.Univ Arkansas, Dept Geosci, 216 Gearhart Hall, Fayetteville, AR 72701 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xizhimenwai Ave, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 4.Univ Texas San Antonio, Dept Geol Sci, San Antonio, TX 78249 USA 5.Gansu Agr Univ, Inst Vertebrate Paleontol, 1 Yingmencun, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Suarez, Celina A.,You, Hai-Lu,Suarez, Marina B.,et al. Stable Isotopes Reveal Rapid Enamel Elongation (Amelogenesis) Rates for the Early Cretaceous Iguanodontian Dinosaur Lanzhousaurus magnidens[J]. SCIENTIFIC REPORTS,2017,7.
APA	Suarez, Celina A.,You, Hai-Lu,Suarez, Marina B.,Li, Da-Qing,&Trieschmann, J. B..(2017).Stable Isotopes Reveal Rapid Enamel Elongation (Amelogenesis) Rates for the Early Cretaceous Iguanodontian Dinosaur Lanzhousaurus magnidens.SCIENTIFIC REPORTS,7.
MLA	Suarez, Celina A.,et al."Stable Isotopes Reveal Rapid Enamel Elongation (Amelogenesis) Rates for the Early Cretaceous Iguanodontian Dinosaur Lanzhousaurus magnidens".SCIENTIFIC REPORTS 7(2017).