| original |
Early Eocene |
Middle Eocene |
USSR(Ukrainian SSR) |
Grigorovich,A.S. Microphytoplankton of the Cretaceous-Paleogene deposits of the northern slopes of the Ukrainian Carpathians. |
1971 |
| details |
Eocene |
Oligocene |
USSR(Caucasus) |
Yegoyan,V.L. et al. Phytoplanktonic microfossils as a criterion for stratigraphic subdivision of the Mesozoic-Cenozoic sedimentary cover of the western Caucasus and Cisaucasia. |
1977 |
| details |
Eocene |
Oligocene |
USSR(Cis-Caucasus) |
Yegoyan,V.L. et al. Phytoplanktonic microfossils as a criterion for stratigraphic subdivision of the Mesozoic-Cenozoic sedimentary cover of the western Caucasus and Cisaucasia. |
1977 |
| details |
Nd |
|
Nd |
Stover,L.E. et al. Analyses of pre-Pleistocene organic-walled dinoflagellates. |
1978 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |