古脊椎动物学报（中英文）2024，Vol.62Issue(3)：165-185,21.DOI:10.19615/j.cnki.2096-9899.240528
江苏安徽早三叠世裂齿鱼科一新种:吴氏三叠鱼
Teffichthys wui sp.nov.,a new perleidid fish from the Early Triassic of Jiangsu and Anhui,China
摘要
Abstract
Perleididae is a group of stem neopterygian fishes known only from the Triassic.Here,we report the discovery of a new perleidid,Teffichthys wui sp.nov.,based on six well-preserved specimens from the late Smithian(Olenekian,Early Triassic)marine deposits of Jurong,Jiangsu and Chaohu,Anhui,China.This new discovery documents the third and youngest species of Teffichthys,which is slightly younger than the Dienerian(Induan)T.elegans from Guizhou and the early Smithian T.madagascariensis from Madagascar.The new species shows diagnostic features of Teffichthys(presence of a spiracular,38-41 lateral line scales,and no more than three epaxial rays in the caudal fin)but differs from T.madagascariensis and T.elegans in some autapomorphies(e.g.,a horizontal opercle/subopercle contact and smooth scales with a nearly straight posterior margin).The diagnostic features for the genus Teffichthys and the family Perleididae are emended based on detailed comparisons of the new taxon with other perleidids.The phylogenetic relationships of perleidids with other stem neopterygians are discussed using a cladistic approach,and the results provide new insights into the phylogeny and classification of main stem neopterygian clades.关键词
江苏/安徽/早三叠世/裂齿鱼目/骨骼学/系统发育Key words
Jiangsu/Anhui/Early Triassic/Perleidiformes/osteology/phylogeny分类
生物科学引用本文复制引用
徐光辉,袁志伟,任艺,廖浚伶,赵丽君,宋海军..江苏安徽早三叠世裂齿鱼科一新种:吴氏三叠鱼[J].古脊椎动物学报（中英文）,2024,62(3):165-185,21.基金项目
国家自然科学基金(批准号:42172008)和中国科学院战略性先导科技专项(B类)(编号:XDB26000000)资助. （批准号:42172008）
