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Relatively low tooth replacement rate in a sauropod dinosaur from the Early Cretaceous Ruyang Basin of central China

文献类型：期刊论文

作者Chang, Huali6; You, Hai-Lu3,4,5; Xu, Li6; Ma, Waisum2; Gao, Diansong6; Jia, Songhai6; Xia, Mengli6; Zhang, Jiming6; Li, Yu6; Wang, Xirui6
刊名PEERJ
出版日期2021-10-27
卷号9页码:11
关键词Sauropod Tooth replacement rate Early Cretaceous Ruyang Basin Henan
ISSN号2167-8359
DOI10.7717/peerj.12361
通讯作者Chang, Huali(hualichang@qq.com) ; You, Hai-Lu(youhailu@ivpp.ac.cn)
英文摘要Tooth replacement rate is an important feature related to feeding mechanics and food choices for dinosaurs. However, only a few data points are available for sauropod dinosaurs, partially due to rarity of relevant fossil material. Four somphospondylan sauropod species have been recovered from the Lower Cretaceous Aptian-Albian Haoling Formation in the Ruyang Basin, Henan Province of central China, but no cranial material has been reported except for a single crown. Here we report the discovery of the rostral portion of a left dentary with replacement teeth in its first five alveoli. Comparative anatomical study shows the partial dentary can be assigned to a member of early diverging somphospondylans. The non-destructive tooth length-based approach to estimating tooth formation time and replacement rate is adopted here. The estimated tooth replacement rate is 76 days, faster than that of Brachiosaurus (83 days) and much lower than typical late diverging lithostrotian titanosaurians (20 days). Thus, this discovery adds an intermediate tooth replacement rate in the evolution of titanosauriform sauropods and supports the idea that evolution of tooth replacement rate is Glade-specific. This discovery also provides more information to understand the Ruyang sauropod assemblage, which includes one of the most giant dinosaurs to have walked our Earth (Ruyangosaurus giganteus).
资助项目National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41872021] ; National Natural Science Foundation of China[41702021] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; UCCL Grant, Universities' China Committee in London
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000713971800004
出版者PEERJ INC
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; UCCL Grant, Universities' China Committee in London
源URL[http://119.78.100.205/handle/311034/19078]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者Chang, Huali; You, Hai-Lu
作者单位1.Chinese Acad Geol Sci, Inst Geol, Beijing, Peoples R China
2.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England
3.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
6.Henan Nat Hist Museum, Zhengzhou, Henan, Peoples R China
推荐引用方式
GB/T 7714		 Chang, Huali,You, Hai-Lu,Xu, Li,et al. Relatively low tooth replacement rate in a sauropod dinosaur from the Early Cretaceous Ruyang Basin of central China[J]. PEERJ,2021,9:11.
APA Chang, Huali.,You, Hai-Lu.,Xu, Li.,Ma, Waisum.,Gao, Diansong.,...&Wei, Xuefang.(2021).Relatively low tooth replacement rate in a sauropod dinosaur from the Early Cretaceous Ruyang Basin of central China.PEERJ,9,11.
MLA Chang, Huali,et al."Relatively low tooth replacement rate in a sauropod dinosaur from the Early Cretaceous Ruyang Basin of central China".PEERJ 9(2021):11.

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