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

doi:10.1038/s41598-017-15653-6

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	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
刊名	SCIENTIFIC REPORTS
	2017-11-10
卷号	7
DOI	10.1038/s41598-017-15653-6
文献子类	Article
英文摘要	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关键词	TOOTH ENAMEL ; FOSSIL RECORD ; PHOSPHATE ; ECOLOGY ; SEASONALITY ; EVOLUTION ; APATITE ; LINES ; WATER
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000414917800059
资助机构	University of Kansas Department of Geosciences ; University of Arkansas Sponsored Research Programs ; CIMA LSAMP research program ; National Natural Science Foundation of China(41688103 ; 41472020)
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7893]
专题	古脊椎动物与古人类研究所_图书馆1
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).