| original |
Early Albian |
Middle Albian |
USSR |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| details |
Hauterivian |
Late Barremian |
USSR(Ukrainian SSR) |
Orlova-Turchina,G.A. The Hauterivian and Barremian spore-pollen complexes of the West and central parts of the Crimea Plain. |
1966 |
| details |
Barremian |
|
USSR(Ukrainian SSR) |
Orlova-Turchina,G.A. The Hauterivian and Barremian spore-pollen complexes of the West and central parts of the Crimea Plain. |
1966 |
| details |
Early Albian |
Middle Albian |
USSR |
Davies,E.H. The Anemiacean, Schizaeacean and related spores. An index to genera and species. |
1985 |