ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
记宁夏石炭纪古鳕类一新属
  
关键词:Zhongweilepis  palaeonisciformes  chondrostei  Tupo Formation  Late Namurian
基金项目:国家重点基础研究发展规划项目(编号: 2012CB821902):国土资源公益性行业科研专项(编号: 201311124)
作者单位E-mail
谭锴 中国地质博物馆 kenquark@163.com 
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摘要:
A New Genus of Palaeonisciformes from Carboniferous Strata in Ningxia
      Two specimens were discovered at the top of Tupo Formation (Late Namurian, Carboniferous) in Zhongwei city, Ningxia Hui Autonomous Region. Their bodies are long and thin with few scales. The hyomandibular is slightly oblique and extends from the middle of the parietal to the end of bigonial arch. The maxillary is faint hilt-shaped. The opercular is as big as subopercular. The orbital is large and far forward. The median fin-rays are segmented and branched. The dorsal lobe of the tail becomes reduced to an abbreviated heterocercal tail. In general, the two specimens possess many more remarkable characteristics in the process of evolution from the chondrosteans to the holosteians. So a new genus is proposed to create in Palaeonisciformes for the two specimens, and more specimens are needed to help us find out which family should the new genus belong to.
TAN Kai.2017.A New Genus of Palaeonisciformes from Carboniferous Strata in Ningxia[J].Acta Geoscientica Sinica,38(2):149-153.
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