| original |
Aalenian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Late Landenian |
|
USSR(Orenburg) |
Tuzhikova,V.I. New data on spore-pollen complexes in Landinian 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 |
Ladinian |
|
USSR(Urals) |
Tuzhikova,V.I. New data on spore-pollen complexes of the Ladinian Deposts 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 |