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A new Silurian fish close to the common ancestor of modern gnathostomes

文献类型：期刊论文

作者Li, Qiang4,5,6,7; Zhu, You-an3,6; Lu, Jing2,3,6; Chen, Yang5,7; Wang, Jianhua4; Peng, Lijian4; Wei, Guangbiao1; Zhu, Min2,3,6
刊名CURRENT BIOLOGY
出版日期2021-08-23
卷号31期号:16页码:3613-+
ISSN号0960-9822
DOI10.1016/j.cub.2021.05.053
英文摘要The Silurian Period occupies a pivotal stage in the unfolding of key evolutionary events, including the rise of jawed vertebrates.(1-4) However, the understanding of this early diversification is often hampered by the patchy nature of the Silurian fossil record,(5) with the articulated specimens of jawed vertebrates only known in isolated localities, most notably Qujing, Yunnan, China.(6-9) Here, we report a new Silurian maxillate placoderm, Bianchengichthys micros, from the Ludlow of Chongqing, with a near-complete dermatoskeleton preserved in articulation. Although geographically separated, the new taxon resembles the previously reported Qilinyu in possessing a unique combination of dermatoskeletal characters. However, the dermal bone of the mandible in Bianchengichthys unexpectedly differs from those in both Qilinyu and Entelognathus and displays a broad oral lamina carrying a line of tooth-like denticles, in addition to the marginal toothless flange. The external morphology of the pectoral fin is preserved and reveals an extensively scale-covered lobate part, flanked by a fringe of lepidotrichia-like aligned scales. The phylogenetic analysis reveals that Bianchengichthys is positioned immediately below Entelognathus plus modern gnathostomes. The discovery significantly widens the distribution of Silurian placoderm-grade gnathostomes in South China and provides a range of morphological disparity for the outgroup comparison to the earliest evolution of jaws, dentitions, and pectoral fins in modem gnathostomes. We also demonstrate that the previously reported Silurian placoderms from central Vietnam l degrees are maxillate placoderms close to Qilinyu, Silurolepis, and Bianchengichthys, corroborating the paleogeographic proximity between the Indochina and South China blocks during the Middle Paleozoic.(11)
WOS关键词PHARYNGEAL DENTICLES ; TEETH ; PLACODERM ; EVOLUTION ; CHINA ; ORIGIN ; JAWS
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA19050102] ; National Natural Science Foundation of China[41872023] ; Chinese Academy Sciences[E0CQ010103] ; National Science Fund for Excellent Young Scholars[42022011] ; Key Research Program of Fron-tier Sciences, CAS[QYZDJ-SSW-DQC002] ; Chinese Postdoctoral Science Foundation[2019M663440]
WOS研究方向Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Cell Biology
语种英语
WOS记录号WOS:000687948600014
出版者CELL PRESS
源URL[http://119.78.100.205/handle/311034/18970]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者Zhu, You-an; Zhu, Min
作者单位1.Chongqing Inst Geol Survey, Chongqing 401122, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
4.Qujing Normal Univ, Qujing 655000, Yunnan, Peoples R China
5.Chongqing Inst Geol & Mineral Resources, Chongqing 401120, Peoples R China
6.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
7.Chongqing Key Lab Exogen Mineralizat & Mine Envir, Chongqing 401120, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qiang,Zhu, You-an,Lu, Jing,et al. A new Silurian fish close to the common ancestor of modern gnathostomes[J]. CURRENT BIOLOGY,2021,31(16):3613-+.
APA Li, Qiang.,Zhu, You-an.,Lu, Jing.,Chen, Yang.,Wang, Jianhua.,...&Zhu, Min.(2021).A new Silurian fish close to the common ancestor of modern gnathostomes.CURRENT BIOLOGY,31(16),3613-+.
MLA Li, Qiang,et al."A new Silurian fish close to the common ancestor of modern gnathostomes".CURRENT BIOLOGY 31.16(2021):3613-+.

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