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A new pterosaur from the early stage of the Jehol biota in China, with a study on the relative thickness of bone walls

文献类型：期刊论文

作者Jiang, Shunxing4; Song, Junyi3,4; Zhang, Xinjun2,3,4; Cheng, Xin1; Wang, Xiaolin3,4
刊名HELIYON
出版日期2023-12-01
卷号9期号:12页码:14
关键词Cratonopterus Ctenochasmatidae Cretaceous Huajiying formation Jehol biota China Bone wall thickness
DOI10.1016/j.heliyon.2023.e22370
通讯作者Jiang, Shunxing(jiangshunxing@ivpp.ac.cn) ; Wang, Xiaolin(wangxiaolin@ivpp.ac.cn)
英文摘要The Huajiying Formation (135.4-128.7 Ma) of the northern Hebei represents the early stage of the Early Cretaceous Jehol Biota in China, yielding many kinds of vertebrates. The only known pterosaur specimen was incomplete and assigned to the Ornithocheiroidea. Here we report a more complete pterosaur specimen, assigned to the Ctenochasmatidae. A new taxon is established on two autapomorphies: a large pneumatic foramen present on the ventral surface of the proximal end of the first wing phalanx; and coracoid lacking an expansion at its contact with the scapula, as well as the following combination of characteristics: subsquare sternal plate; coracoid having an extremely concave articulation with a posterior expansion; humerus without a tubercle on the proximal margin between the deltopectoral crest and the head; humerus slightly longer than the wing metacarpal; and the first and third wing phalanges equal in length. The relative thicknesses of bone walls are investigated among pterosaurs in three ways. The overall distribution of R/t ratios shows that most non-pterodactyloids, archaeopterodactyloids, and dsungaripterids have smaller R/t ratios than other groups. Relatively thick bone walls are not unique for the Dsun-garipteridae as previously thought, and the humerus and radius of dsungaripterids have thinner walls than other bones. The feature of small R/t ratios is plesiomorphic and the thin-walled humerus and radius of dsungaripterids were evolved to meet the need of the flight, not for frequent take-off and landing as previously thought.
WOS关键词CRETACEOUS YIXIAN FORMATION ; TRIASSIC PTEROSAURS ; PTERODACTYLOIDEA ; ONTOGENY ; HISTOLOGY ; GROWTH ; CTENOCHASMATIDAE ; PALEOHISTOLOGY ; ASSEMBLAGES ; ARCHOSAURS
资助项目National Natural Science Foundation of China[42072028] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[42072017] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB26000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019075] ; Scientific Research Foundation of Shenyang Normal University, China[BS202309]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001127942500001
出版者CELL PRESS
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Scientific Research Foundation of Shenyang Normal University, China
源URL[http://119.78.100.205/handle/311034/23356]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Jiang, Shunxing; Wang, Xiaolin
作者单位1.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China
2.Shenyang Normal Univ, Coll Paleontol, Shenyang 110034, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Shunxing,Song, Junyi,Zhang, Xinjun,et al. A new pterosaur from the early stage of the Jehol biota in China, with a study on the relative thickness of bone walls[J]. HELIYON,2023,9(12):14.
APA Jiang, Shunxing,Song, Junyi,Zhang, Xinjun,Cheng, Xin,&Wang, Xiaolin.(2023).A new pterosaur from the early stage of the Jehol biota in China, with a study on the relative thickness of bone walls.HELIYON,9(12),14.
MLA Jiang, Shunxing,et al."A new pterosaur from the early stage of the Jehol biota in China, with a study on the relative thickness of bone walls".HELIYON 9.12(2023):14.

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来源：古脊椎动物与古人类研究所

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