Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs

doi:10.1098/rsos.230147

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	Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs
	Wang, Yan 1,2; Li, Zhiheng3 ; Wang, Chun-Chieh 4,5; Bailleul, Alida M. M.3; Wang, Min3 ; O'Connor, Jingmai6 ; Li, Jinhua 7; Zheng, Xiaoting 2; Pei, Rui 3; Teng, Fangfang 8; Wang, Xiaoli 1,2; Zhou, Zhonghe3
	2023-05-17
发表期刊	ROYAL SOCIETY OPEN SCIENCE
ISSN	2054-5703
卷号	10 期号:5 页码:13
摘要	Although it is commonly considered that, in birds, there is a trend towards reduced dentition, teeth persisted in birds for 90 Ma and numerous macroscopic morphologies are observed. However, the extent to which the microstructure of bird teeth differs from other lineages is poorly understood. To explore the microstructural differences of the teeth of birds in comparison with closely related non-avialan dinosaurs, the enamel and dentine-related features were evaluated in four Mesozoic paravian species from the Yanliao and Jehol biotas. Different patterns of dentinal tubular tissues with mineralized extensions of the odontoblast processes were revealed through the examination of histological sectioning under electron microscopy. Secondary modification of the tubular structures, forming reactive sclerotic dentin of Longipteryx, and the mineralization of peritubular dentin of Sapeornis were observed in the mantle dentin region. The new observed features combined with other dentinal-associated ultrastructure suggest that the developmental mechanisms controlling dentin formation are quite plastic, permitting the evolution of unique morphologies associated with specialized feeding behaviours in the toothed birds. Proportionally greater functional stress placed on the stem bird teeth may have induced reactive dentin mineralization, which was observed more often within tubules of these taxa. This suggests modifications to the dentin to counteract potential failure.
关键词	bird non-avian dinosaur diet tooth dentin enamel
DOI	10.1098/rsos.230147
关键词[WOS]	MECHANICAL-PROPERTIES ; CRETACEOUS BIRD ; CHINA ; PATTERNS ; EVOLUTION ; THEROPOD
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000992496200004
出版者	ROYAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22696
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Li, Zhiheng
作者单位	1.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China 2.Tianyu Nat Hist Museum Shandong, Pingyi 273300, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xi Zhi Men Wai St, Beijing 100044, Peoples R China 4.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan 5.Natl Taiwan Univ, Dept Geosci, Taipei 10617, Taiwan 6.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA 7.Chinese Acad Sci IGGCAS, Inst Geol & Geophys, Innovat Acad Earth Sci, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 8.Xinghai Paleontol Museum Dalian, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yan,Li, Zhiheng,Wang, Chun-Chieh,et al. Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs[J]. ROYAL SOCIETY OPEN SCIENCE,2023,10(5):13.
APA	Wang, Yan.,Li, Zhiheng.,Wang, Chun-Chieh.,Bailleul, Alida M. M..,Wang, Min.,...&Zhou, Zhonghe.(2023).Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs.ROYAL SOCIETY OPEN SCIENCE,10(5),13.
MLA	Wang, Yan,et al."Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs".ROYAL SOCIETY OPEN SCIENCE 10.5(2023):13.

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