Archaeotriletes |
Archaeotriletes atavus
|
USSR(Yaroslav) |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium longispinosum
|
USSR(Yaroslav) |
Middle Ordovician |
|
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Yaroslav) |
Middle Ordovician |
|
Leiotriletes |
Leiotriletes microrugosus
|
USSR(Yaroslav) |
Middle Ordovician |
|
Leiotriletes |
Leiotriletes simplicissimus
|
USSR(Yaroslav) |
Middle Ordovician |
|
Spumenospheridium |
Spumenospheridium tuberosum
sp. nov. |
USSR(Yaroslav) |
Middle Ordovician |
|
Tenuispheridium |
Tenuispheridium subovalis
sp. nov. |
USSR(Yaroslav) |
Middle Ordovician |
|
Zonosphaeridium |
Zonosphaeridium timopheevii
sp. nov. |
USSR(Yaroslav) |
Middle Ordovician |
|