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Geolocation
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Author - title
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Year
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| details | Early Permian | South Dakota | Kremp,G.O.W. Report on referred fossils.I. | 1960 | |
| details | Artinskian | USSR(Urals) | Samoilovich,S.R. Pollen and spores of Permian deposits of Cherdyn and Aktyubinsk in the Lower Urals. (In: Palaeobotanical Symposium) | 1953 |