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Geolocation
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Author - title
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Year
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| details | Early Triassic | Late Triassic | USSR(Komi ASSR) | Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. | 1966 |
| details | Late Tatarian | Early Triassic | USSR(Komi ASSR) | Chalyashev,V.I. On stratigraphy of the Upper Permian and Triassic of northern Pre-Ural | 1963 |