Priscogalea |
Priscogalea sp
|
USSR(Baltic) |
Ordovician |
|
Protosphaeridium |
Protosphaeridium asaphum
|
USSR(Baltic) |
Middle Cambrian |
|
Protosphaeridium |
Protosphaeridium densum
|
USSR(Baltic) |
Middle Cambrian |
Silurian |
Protosphaeridium |
Protosphaeridium densum
|
USSR(Yaroslav) |
Early Frasnian |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Baltic) |
Cambrian |
Middle Cambrian |
Retusotriletes |
Retusotriletes communis
|
USSR(Yaroslav) |
Devonian |
|
Retusotriletes |
Retusotriletes simplex
|
USSR(Yaroslav) |
Carboniferous |
|
Retusotriletes |
Retusotriletes sp
|
USSR(Yaroslav) |
Early Carboniferous |
|
Retusotriletes |
Retusotriletes tamilii
|
USSR(Yaroslav) |
Devonian |
|
Simozonotriletes |
Simozonotriletes intortus
|
USSR(Yaroslav) |
Carboniferous |
|
Stenozonotriletes |
Stenozonotriletes definitus
|
USSR(Yaroslav) |
Early Carboniferous |
|
Stenozonotriletes |
Stenozonotriletes simplex
|
USSR(Yaroslav) |
Devonian |
Early Carboniferous |
Symplassosphaeridium |
Symplassosphaeridium ballatum
|
USSR(Baltic) |
Middle Cambrian |
|
Synsphaeridium |
Synsphaeridium compactum
|
USSR(Baltic) |
Ordovician |
|
Synsphaeridium |
Synsphaeridium compactum
|
USSR(Yaroslav) |
Early Frasnian |
Early Carboniferous |
Synsphaeridium |
Synsphaeridium conglutinatum
|
USSR(Yaroslav) |
Devonian |
|
Synsphaeridium |
Synsphaeridium rarum
|
USSR(Yaroslav) |
Early Carboniferous |
|