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A new mammal from the Lower Cretaceous Jehol Biota and implications for eutherian evolution

文献类型：期刊论文

作者Wang, Hai-Bing3,4,5; Hoffmann, Simone6; Wang, Dian-Can2; Wang, Yuan-Qing1,4,5
刊名PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
出版日期2022-03-28
卷号377期号:1847页码:11
ISSN号0962-8436
关键词Early Cretaceous Jehol Biota Eutheria Meckelian cartilage inner ear tooth replacement
DOI10.1098/rstb.2021.0042
通讯作者Wang, Hai-Bing(wanghaibing@ivpp.ac.cn)
英文摘要Here we report on a new Early Cretaceous eutherian represented by a partial skeleton from the Jiufotang Formation at Sihedang site, Lingyuan City, Liaoning Province that fills a crucial gap between the earliest eutherians from the Yixian Formation and later Cretaceous eutherians. The new specimen reveals, to our knowledge for the first time in eutherians, that the Meckelian cartilage was ossified but reduced in size, confirming a complete detachment of the middle ear from the lower jaw. Seven hyoid elements, including paired stylohyals, epihyals and thyrohyals and the single basihyal are preserved. For the inner ear the ossified primary lamina, base of the secondary lamina, ossified cochlear ganglion and secondary crus commune are present and the cochlear canal is coiled through 360 degrees. In addition, plesiomorphic features of the dentition include weak conules, lack of pre- and post-cingula and less expanded protocones on the upper molars and height differential between the trigonid and talonid, a large protoconid and a small paraconid on the lower molars. The new taxon displays an alternating pattern of tooth replacement with P3 being the last upper premolar to erupt similar to the basal eutherian Juramaia. Parsimony analysis places the new taxon with Montanalestes, Sinodelphys and Ambolestes as a sister group to other eutherians. This article is part of the theme issue 'The impact of Chinese palaeontology on evolutionary research'.
WOS关键词MIDDLE-EAR ; INNER-EAR ; MORPHOLOGY ; PHYLOGENY ; PETROSAL ; SKULL
资助项目Strategic Priority Research Programme of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDB18000000] ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China[41802005] ; National Natural Science Foundation of China[41688103] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[183121]
WOS研究方向Life Sciences & Biomedicine - Other Topics
语种英语
出版者ROYAL SOC
WOS记录号WOS:000751802600005
资助机构Strategic Priority Research Programme of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)
源URL[http://119.78.100.205/handle/311034/21485]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者Wang, Hai-Bing
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
2.Peking Univ, Dept Oral & Maxillofacial Surg, Sch Stomatol, 22 South Zhongguancun Ave, Beijing, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
6.New York Inst Technol, Dept Anat, Coll Osteopath Med, Old Westbury, NY USA
推荐引用方式
GB/T 7714		 Wang, Hai-Bing,Hoffmann, Simone,Wang, Dian-Can,et al. A new mammal from the Lower Cretaceous Jehol Biota and implications for eutherian evolution[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2022,377(1847):11.
APA Wang, Hai-Bing,Hoffmann, Simone,Wang, Dian-Can,&Wang, Yuan-Qing.(2022).A new mammal from the Lower Cretaceous Jehol Biota and implications for eutherian evolution.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,377(1847),11.
MLA Wang, Hai-Bing,et al."A new mammal from the Lower Cretaceous Jehol Biota and implications for eutherian evolution".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 377.1847(2022):11.

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