Abstract

Ammonites of the genus Lissoceras from the Upper Bajocian of Karachay-Cherkessia are discussed. The new material, represented exclusively by macroconchs of different age stages, makes it possible to clarify the taxonomic composition of this genus in the basin of the Kuban River. The new taxa L. kubanense sp. nov. from the lowermost horizons of the Niortense Zone, and L. paviai sp. nov. from the middle part of this zone, are established. Single specimens of L. meletense (Parona) (upper part of the Niortense Zone), L. ovale Pavia et Fernández-López (lower part of the Garantiana Zone), and L. haugi Sturani (lower part of the Parkinsoni Zone) were found. The description and images of the ammonites are given.

中文翻译：

---

俄罗斯北高加索上巴约西亚（中侏罗统）的利索角属（Ammonoidea: Lissoceratidae）

摘要

讨论了来自 Karachay-Cherkessia 上 Bajocian 的Lissoceras属的菊石。新材料仅以不同年龄阶段的大贝类为代表，使得阐明库班河流域该属的分类组成成为可能。新的分类群L. kubanense sp。十一月 从Niortense带的最低层和L. paviai sp。十一月 从这个区域的中间部分，建立起来。L. meletense ( Parona)（ Niortense区上部）、 L.ovale Pavia et Fernández-López（ Garantiana区下部）和L. haugi的单个标本发现了 Sturani（帕金索尼区的下部）。给出了菊石的描述和图像。