Abstract

Salwaichthys paratethyensis gen. et sp. nov., representative of a new monotypic family of perciform fishes Salwaichthyidae, is described based on three specimens from the lower Oligocene of the Caucasus (Abkhazia and SW Russia, Adygea) and Polish Carpathians. The new family is characterized by: elongated body with relatively small head and long caudal peduncle, large mouth, divided dorsal fins, numerous (about 55) vertebrae and their rostro-caudal compression, and small cycloid scales. Salwaichthys shares a number of apomorphic features with members of certain perciform families, most notably the Propercarinidae. However, because of its unique combination of features, the new family cannot be properly placed within any known perciform suborder and it is placed herein incertae sedis among the Perciformes.

中文翻译：

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高加索和喀尔巴阡山脉下渐新世的新家庭Salwaichthyidae（双鱼座，Perciformes sl）

摘要

Salwaichthys paratethyensis gen。等。nov。是新的鲈鱼科鱼类的单型家族的代表，基于高加索下渐新世（阿布哈兹和俄罗斯西南部，阿迪格）和波兰喀尔巴阡的三个标本进行了描述。新家族的特征是：细长的身体，头部较小，尾柄长，嘴大，背鳍分开，椎骨众多（约55个），其椎弓根压缩，小摆线鳞片。Salwaichthys与某些periform家族的成员具有许多亚型特征，最显着的是Propercarinidae。然而，由于其独特的功能组合，新的家庭不能妥善放置任何已知鲈形目内，并在此放置地位未定 在Perciformes之间。