| original |
Early Ludlovian |
|
USSR |
Sheshegova,L.I. Silurian microfossils of Podolia. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| original |
Middle Ludlovian |
|
USSR |
Sheshegova,L.I. Silurian microfossils of Podolia. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| original |
Ludlovian |
Early Devonian |
USSR(Russian Platform) |
Sheshegova,L.I. Acritarchs of the Silurian and the Lower Devonian of Podolia. (In: Microfossils USSR. T.F.Vozzhennikova et al, editors) |
1974 |
| details |
Ludlovian |
|
USSR(Ukrainian SSR) |
Kiryanov,V.V. Silurian acritarchs of Volhynia and Podolia |
1978 |
| details |
Early Ludlovian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |