Abstract

A new benthosuchid Benthosuchus lukyanovi sp. nov. is described from the Early Triassic deposits of the Bludnovo locality in the Vologda Oblast (Yug River Basin). The new species has the largest skull among the known Benthosuchus specimens. Morphological differences between B. lukaynovi and the other representatives of the genus mostly concern the trematosauroid features: the position of the supraorbital canals (sulci supraorbitales) is close to the sagittal suture in the internarial space, presence of weak angular bend, and the strongly elongated posterior Meckelian foramen. The data obtained expand our understanding of the morphological evolution of benthosuchids during the early stages of the formation of the trematosaurid body organization plan.

中文翻译：

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莫斯科向斜线的下三叠纪新的本底栖动物（两栖动物：Temnospondyli）

摘要

一个新的bentosuchid Benthosuchus lukyanovi sp。十一月 从沃洛格达州（尤格河盆地）的布卢德诺沃地区的早期三叠纪沉积物中描述。在已知的本底栖动物标本中，新物种的头骨最大。B. lukaynovi和该属的其他代表之间的形态学差异主要涉及类口瘤样特征：眶上管（龈上眶）的位置靠近鼻间间隙中的矢状缝合线，存在弱角弯曲和强烈拉长后麦克雷尔孔。所获得的数据扩大了我们对肢端类龙虾组织计划形成早期阶段底栖类动物形态演变的理解。