| original |
Sakmarian |
Artinskian |
USSR(Urals) |
Dyupina,G.V. New species of acritarchs in Permian deposits of the Urals. (In: New Miospores, Foraminifera, Ostracods and conodonts of the Paleozoic and Mesozoic of the Urals. Collected Articles on the Problems of Stratigraphy.#24. N.P.Malachova and B.I.Chuvashev, editors) |
1975 |
| details |
Asselian |
|
USSR(Urals) |
Chuvashov,B.I. et al. Faunal complexes and problems of the correlation of diverse facies deposits (Asselian Stage of the western slope of the Middle Urals). (In: The Biostratigraphy and Paleobiogeography of the Devonian and Carboniferous, Asian USSR. V.N.Dubatolov et al, editors) |
1978 |
| details |
Artinskian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |