[关键词]
[摘要]
记述在贵州兴义著名的贵州龙化石层(上三叠统卡尼介)中发现的最原始弓鳍鱼而建立了一新属新种-优美贵州弓鳍鱼(Guizhouamia bellula gen.et sp.nov.)。
[Key word]
[Abstract]
A primitive amiid fish, Guizhouamia bellula gen. et sp. nov., is described in this paper, which is found from the marine Upper Triassic rocks of Xingyi, Guizhou. This fish is of great palaeontological interest because it belongs to a form of amiid which is so primitive in the nature of vertebral column, the unusual small size and the simply bifurcated rays that serve well to represent the genuine ancestor of the common Cretaceous Cenozoic amiid genera such as Cyclurus, Amia , etc., which have very wide distribution in North America and Western Europe. The new discovery shows that the history of the amiid fishes could be further traced back from about 150 million years ago to about 220 million years ago.
[中图分类号]
Q915.862
[基金项目]
中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室基金 (No .0 2 3 110 )资助成果