古脊椎动物学报2023，Vol.61Issue(3)：161-181,21.DOI:10.19615/j.cnki.2096-9899.230703
云贵地区中三叠世近鲱形类贵州中华真颌鱼(Sinoeugnathus kueichowensis)的分类学修订
Taxonomic revision of Sinoeugnathus kueichowensis(Halecomorphi,Holostei)from the Middle Triassic of Guizhou and Yunnan,China
摘要
Abstract
The previously alleged'eugnathid amiiform'Sinoeugnathus kueichowensis is a small-sized halecomorph from the Middle Triassic(Ladinian)marine deposits of Guizhou and Yunnan,China.A morphological redescription and taxonomic revision of this taxon are provided based on a detailed examination of the holotype and 15 new specimens.Studies of these specimens revealed some morphological details previously undescribed or misidentified for this taxon,including a hatchet-shaped antorbital,two broad suborbitals,a sensory canal in the maxilla,and three pairs of extrascapulars.For the first time,Sinoeugnathus was incorporated into an analysis of halecomorph phylogeny,and the results recover it as the sister taxon of the Anisian Subortichthys from Luoping,Yunnan,and both are grouped with two Ladinian genera Allolepidotus and Eoeugnathus from the Monte San Giorgio area into a monophyletic group(namely Subortichthyidae fam.nov.herein)at the base of Ionoscopiformes.This taxonomic reassessment of Subortichthys provides new insights into the phylogeny and paleogeographic evolution of Ionoscopiformes.关键词
云贵地区/中三叠世/近鲱形类/预言鱼目/骨骼学/系统发育Key words
Guizhou and Yunnan/Middle Triassic/Ionoscopiformes/Halecomorphi/osteology/phylogeny分类
生物科学引用本文复制引用
冯东昊,徐光辉,马昕莹,任艺..云贵地区中三叠世近鲱形类贵州中华真颌鱼(Sinoeugnathus kueichowensis)的分类学修订[J].古脊椎动物学报,2023,61(3):161-181,21.基金项目
国家自然科学基金(批准号:42172008,42202016)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:42172008,42202016）
