Abstract: Lycoptera is an important member of the Jehol Biota and has its distribution only in Eastern Asia. In 1998, fish materials were found in the Yixian Formation at a new fossil locality near Fuxin City, Western Liaoning, China. The third infraorbital of the new fish is semicircular, which is different from that in all other species of the genus. The mandible of the fish is long and low, very peculiar in the genus. Therefore, a new species is proposed for the Fuxin specimens-Lycoptera fuxinensis sp. nov.

摘要： 记述了辽宁阜新县大五家子镇三吉窝铺的鱼化石。该鱼具有颞孔,前上颌骨小,上颌骨大,辅上颌骨1 块,口缘有一行锥形齿,背鳍小于臀鳍,16 根分叉尾鳍条,尾下骨7 块,尾上骨1 块,尾神经骨3～4 块。这些特征基本上是狼鳍鱼的定义特征,因此,应该属于狼鳍鱼属。阜新标本的第三眶下骨呈半圆形,不同于狼鳍鱼属各已知种。阜新标本的下颌长而低,在狼鳍鱼属中,只有三棵榆树狼鳍鱼和德永氏狼鳍鱼的下颌与之相似。但阜新的标本在具有10根胸鳍主要鳍条、16 根尾鳍分叉鳍条以及1 块尾上骨方面不同于三棵榆树狼鳍鱼。与德永氏狼鳍鱼相比