The Age of the Tetrapod Fauna “Mastodonsaurus” (Middle Triassic) of the East European Platform: First U-Pb LA-ICPMS Radio isotopic Dating Results. Article 1. Lithological Characteristics and Depositional Environment

Vladimir V. Silantiev, Anna V. Kulikova, Igor V. Novikov, Anastasia Felker, Динара Надировна Мифтахутдинова, Ruslan R. Gabdullin, Kazhmurat Maksutovich Akhmedenov, Jamilya B. Yakupova, Evgenia M. Nurieva, Ya. Ya. Saetgaleeva

2025

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DOI 10.55959/msu0579-9406-4-2025-64-2-19-32
Data confidence 70 medium
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Abstract

The article provides new data on the age of the tetrapod fauna “Mastodonsaurus” (Middle Triassic) of the Eastern European Platform. An analysis of the strata succession and ichnofossils has revealed that during the Eltonian time, sedimentation took place mainly in a continental environment, with occasional transgressions. In the Inderian time, there was a gradual tectonic submergence of the area — from the intertidal zone of the beach to the sublittoral zone of a brackish-water basin.