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

doi:10.1002/ar.25289

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	A preliminary analysis of dental microstructure in Hamipterus (Pterosauria, Pterodactyloidea)
	Chen, He 1,2,3; Li, Zhiheng3 ; Jiang, Shunxing 3; Wu, Qian 3,4; Gong, Yanxin 5; Zhu, Xufeng 6; Wang, Xiaolin3,4,7
	2023-07-21
发表期刊	ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
ISSN	1932-8486
期号	0 页码:15
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.
关键词	dental microstructure Hamipterus histology pterosaurs tooth formation time
DOI	10.1002/ar.25289
关键词[WOS]	FOSSIL VERTEBRATES ; TEETH ; DINOSAURS ; PLICIDENTINE ; ALLIGATOR ; LINES
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41572020] ; Strategic Priority Research Program (B) of CAS[XDB26000000] ; National Natural Science Foundation of China[42072028] ; National Natural Science Foundation of China[42288201] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019075]
WOS研究方向	Anatomy & Morphology
WOS类目	Anatomy & Morphology
WOS记录号	WOS:001033899100001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22782
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.Sun Yat Sen Univ, Sch Ecol, Shenzhen, Peoples R China 2.Sun Yat Sen Univ, Museum Biol, Guangzhou, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Shenzhen Museum, Shenzhen, Peoples R China 6.Natl Nat Hist Museum China, Beijing, Peoples R China 7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, 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(0):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(0),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 .0(2023):15.

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