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A preliminary analysis of dental microstructure in Hamipterus (Pterosauria, Pterodactyloidea)

文献类型：期刊论文

作者Chen, He5,6,7; Li, Zhiheng5; Jiang, Shunxing5; Wu, Qian4,5; Gong, Yanxin3; Zhu, Xufeng2; Wang, Xiaolin1,4,5
刊名ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
出版日期2023-07-21
页码15
关键词dental microstructure Hamipterus histology pterosaurs tooth formation time
ISSN号1932-8486
DOI10.1002/ar.25289
通讯作者Wang, Xiaolin(wangxiaolin@ivpp.ac.cn)
英文摘要The toothed members of Pterosauria display an extremely wide range of tooth morphologies that supported a variety of feeding habits. Histological studies on the teeth of different pterosaur clades are potentially valuable in understanding the development of their tooth diversity. In this study, we used histological sections and scanning electron microscopy to describe and interpret the tooth microstructure of Hamipterus (Pterodactyloidea). Our analysis is based on seven teeth of Hamipterus (six isolated and one from a skull) from the Lower Cretaceous collected in Hami, China. Our results show that the enamel on the tooth crown is thin (similar to 25 mu m) in Hamipterus and covers only approximately half of the tooth crown. This thin enamel of the Hamipterus tooth makes it vulnerable and often becomes damaged during taphonomic and diagenetic processes. The radicular pulp inside the conical-shaped root shows a spindle space with a small foramen at the bottom, while the coronal pulp shows a small tunnel (100-140 mu m in diameter). We estimate that the small teeth of Hamipterus likely took approximately 80 days to form. Furthermore, the tooth has Andresen lines, which represent 7-15 days period. For stable articulation of the tooth in the alveolus, the thick cellular cementum is concentrated on the lingual side of the root. The acellular cementum (similar to 40 mu m thick) layer runs from the root to the partial tooth crown.
WOS关键词FOSSIL VERTEBRATES ; TEETH ; DINOSAURS ; PLICIDENTINE ; ALLIGATOR ; LINES
资助项目National Natural Science Foundation of China[41572020] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[42072028] ; Strategic Priority Research Program (B) of CAS[XDB26000000] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019075]
WOS研究方向Anatomy & Morphology
语种英语
WOS记录号WOS:001033899100001
出版者WILEY
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program (B) of CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
源URL[http://119.78.100.205/handle/311034/22781]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Wang, Xiaolin
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
2.Natl Nat Hist Museum China, Beijing, Peoples R China
3.Shenzhen Museum, Shenzhen, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
6.Sun Yat Sen Univ, Museum Biol, Guangzhou, Peoples R China
7.Sun Yat Sen Univ, Sch Ecol, Shenzhen, Peoples R China
推荐引用方式
GB/T 7714		 Chen, He,Li, Zhiheng,Jiang, Shunxing,et al. A preliminary analysis of dental microstructure in Hamipterus (Pterosauria, Pterodactyloidea)[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2023:15.
APA Chen, He.,Li, Zhiheng.,Jiang, Shunxing.,Wu, Qian.,Gong, Yanxin.,...&Wang, Xiaolin.(2023).A preliminary analysis of dental microstructure in Hamipterus (Pterosauria, Pterodactyloidea).ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,15.
MLA Chen, He,et al."A preliminary analysis of dental microstructure in Hamipterus (Pterosauria, Pterodactyloidea)".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY (2023):15.

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来源：古脊椎动物与古人类研究所

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