Acanthodiacrodium |
Acanthodiacrodium lazarewii
|
Antarctica |
Westphalian B |
|
Acanthodiacrodium |
Acanthodiacrodium obolense
|
USSR(Leningrad) |
Late Cambrian |
|
Angulatisporites |
Angulatisporites sp
|
USSR(Krasnoyarsk Kray) |
Late Turonian |
|
Archaeozonotriletes |
Archaeozonotriletes sp
|
USSR(Ukrainian SSR) |
Late Devonian |
|
Baltisphaeridium |
Baltisphaeridium cognitum
|
Poland |
Late Wenlockian |
|
Baltisphaeridium |
Baltisphaeridium gracile
|
Nd |
Middle Cambrian |
|
Baltisphaeridium |
Baltisphaeridium longispinosum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Baltisphaeridium |
Baltisphaeridium molodovense
sp. nov. |
USSR(Kazakh SSR) |
Middle Ordovician |
|
Coscinodiscus |
Coscinodiscus dissonus
|
USSR(Urals) |
Late Cretaceous |
|
Gloeocapsamorpha |
Gloeocapsamorpha prisca
|
Nd |
Nd |
|
Hymenozonotriletes |
Hymenozonotriletes pusillus
|
USSR(Ukrainian SSR) |
Early Carboniferous |
|
Hymenozonotriletes |
Hymenozonotriletes sp
|
USSR(Ukrainian SSR) |
Early Carboniferous |
|
Hystrichosphaeridium |
Hystrichosphaeridium molodovense
sp. nov. |
USSR(Moldavian SSR) |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium tshunense
sp. nov. |
USSR(Kazakh SSR) |
Middle Ordovician |
|
Leiosphaeridia |
Leiosphaeridia pestovii
|
USSR(Novgorod) |
Early Ordovician |
|
Leiosphaeridium |
Leiosphaeridium discum
|
USSR(Pre-Baltic) |
Ludlovian |
|
Leiosphaeridium |
Leiosphaeridium muitschum
|
Poland |
Late Wenlockian |
|