古脊椎动物学报(中英文)2023，Vol.61Issue(4)：261-276,16.DOI:10.19615/j.cnki.2096-9899.230901
湖南中泥盆统跳马涧组中华沟鳞鱼再研究
Reappraisal of Bothriolepis sinensis Chi,1940 from the Tiaomachien Formation,Hunan,China
摘要
Abstract
Bothriolepis sinensis Chi 1940,mainly based on anterior median dorsal plates from the Middle Devonian Tiaomachien Formation of Hunan,is the first Paleozoic vertebrate taxon erected in China.Although additional materials of B.sinensis from the type locality were described by Lu in 1988,its morphology and phylogeny remain poorly understood.In this study,we complemented the morphology of the skull and trunk armor of B.sinensis based on Chi's specimens housed in the Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,and several previously undescribed specimens in the Geological Museum of China.Bothriolepis sinensis differs from other Bothriolepis in the following combination of characteristics:enlarged supraotic thickening,length/width ratio of head shield 1.4-1.6,broad orbital fenestra(greater than 1/3 of the head shield width),and fan-shaped preorbital recess.The phylogenetic analysis did not place B.askinae in the most basal position of the genus and revealed that B.sinensis and B.kwangtungensis consistently from a monophyletic group characterized by their slender proximal segment of the pectoral fin(length/width ratio greater than 7).A majority of Chinese Bothriolepis species(B.niushoushanensis,B.lochangensis,B.tungseni,B.kwangtungensis and B.sinensis)were clustered in a clade characterized by the pectoral pit-line on the ventral central plate 1 extending to the ventral central plate 2.The paleogeographic reconstruction using the data from the DeepBone platform showed that Bothriolepis had its oldest occurrences in South China and East Gondwana in Eifelian,dispersed rapidly worldwide,and then diversified across the coasts of the Rheic Ocean.关键词
湖南/中泥盆统/胴甲鱼类/沟鳞鱼类/系统发育/古生物地理学/数据可视化Key words
Hunan/Middle Devonian/Antiarcha/Bothriolepis/phylogeny/paleobiogeography/data visualization分类
生物科学引用本文复制引用
罗彦超,朱敏,卢立伍,潘照晖..湖南中泥盆统跳马涧组中华沟鳞鱼再研究[J].古脊椎动物学报(中英文),2023,61(4):261-276,16.基金项目
国家自然科学基金(批准号:42002015,41872023,42130209,42272028)、中国科学院青年创新促进会(编号:2021070)和现代古生物学和地层学国家重点实验室(编号:193121)资助. Acknowledgements We thank Jia Lian-Tao and Cui Xin-Dong for their assistance during this work.This project was supported by the National Natural Science Foundation of China(42002015,41872023,42130209,42272028),Youth Innovation Promotion Association CAS(2021070),and State Key Laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology,CAS)(193121). （批准号:42002015,41872023,42130209,42272028）
