自1848年狼鳍鱼属建立以来,至今已有百余年的历史。此间众多的国内外学者就其系统分类、形态结构、地史和地理分布、鱼群组合以及生态环境等有关问题作了不断地研究。狼鳍鱼在中国中生代陆相地层中产出丰富、分布广泛、层位稳定,并与一些繁盛于晚侏罗世的动物化石共生,组成驰名世界的热河动物群。1959年第一届全国地层会议之后的近三十年来,狼鳍鱼群一直被认为是我国北方晚侏罗世的标准化石组合,并通常以狼鳍鱼的出现作为划分侏罗—白垩系界线的主要依据。刘宪亭等人的《华北的狼鳍鱼化石》(1963)一文是对我国 Since the establishment of the genus Langur in 1848, it has been more than one hundred years old. Many scholars here at home and abroad have made continuous research on related issues such as their system classification, morphological structure, geography history and geographical distribution, fish school assemblage and ecological environment. Wolffin fish is rich in Mesozoic terrestrial strata in China. It is widely distributed and stable in layers, and coexists with some fossil animals that flourished in the Late Jurassic to form the world-famous Jehol fauna. For nearly three decades after the first National Stratum Conference in 1959, the Selaginella fishes have been considered as the standard fossil assemblage of the Late Jurassic in northern China, and the Jurassic-Cretaceous boundary The main basis. Liu Xianting et al., “The North China’s Wolffin fish fossils” (1963) is a text to our country