| details |
Tithonian |
Valanginian |
USSR(Ukrainian SSR) |
Orlova-Turchina,G.A. Lower Cretaceous palynostratigraphy of the Crimea |
1971 |
| details |
Hauterivian |
|
USSR(Ukrainian SSR) |
Orlova-Turchina,G.A. Lower Cretaceous palynostratigraphy of the Crimea |
1971 |
| details |
Early Aptian |
|
USSR(Ukrainian SSR) |
Orlova-Turchina,G.A. Lower Cretaceous palynostratigraphy of the Crimea |
1971 |
| details |
Toarcian |
|
USSR(Yakut ASSR) |
Ilyina,V.I. Biostratigraphic significance of Toarcian spore-pollen assemblage of Siberia. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| details |
Tournaisian |
Late Triassic |
Worldwide |
Alvin,K.L. Cheirolepidiaceae: Biology, structure and paleoecology. |
1982 |