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Author - title
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details | Late Permian | Early Triassic | USSR(Yakut ASSR) | Safyainikov,Y.V. Concerning the formation, size and age of the Lower Triassic Tuffogenic structure of South Western Yakuts. (In: Material on the Biostratigraphy and Paleogeography of Eastern Siberia) | 1975 |
details | Ladinian | Carnian | USSR(Urals) | Tuzhikova,V.I. Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) | 1973 |