Abstract
A reference section of the Permian and Triassic continental deposits of the Zhukov ravine near the town of Gorokhovets (Vladimir Region) is described and new tetrapod localities are characterized. The position of the Permian-Triassic boundary in this section is recognized and its faunal substantiation based on vertebrates is provided for the first time. The Zhukov ravine section is unique in the fact that it shows a thick stratigraphically continuous succession of the Permo-Triassic boundary beds, with three successive tetrapod zones: the terminal Permian Chroniosuchus paradoxus and Archosaurus rossicus zones and the Early Triassic Tupilakosaurus wetlugensis Zone.
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