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From
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To
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Geolocation
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Author - title
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Year
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| details | Early Permian | USSR(Chelyabinskaya) | Silina,Y.N. et al. Permian strata on the East Side of the Urals | 1962 | |
| details | Early Permian | South Dakota | Kremp,G.O.W. Report on referred fossils.I. | 1960 | |
| details | Artinskian | Kungurian | USSR(Chelyabinskaya) | Varlamov,I.P. et al. On the stratigraphy of Permian deposits of the Magnitogorsk Syncline | 1964 |