Acanthodiacrodium |
Acanthodiacrodium
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Dasydiacrodium |
Dasydiacrodium
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium
|
USSR(Russian Platform) |
Early Ordovician |
Middle Ordovician |
Hystrichosphaeridium |
Hystrichosphaeridium
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Leioligotriletum |
Leioligotriletum
|
USSR(Russian Platform) |
Early Cambrian |
|
Leiosphaeridia |
Leiosphaeridia
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Leiotriletes |
Leiotriletes
|
USSR(Russian Platform) |
Late Gothlandian |
|
Lophosphaeridium |
Lophosphaeridium
|
USSR(Russian Platform) |
Late Proterozoic |
Cambrian |
Lophosphaeridium |
Lophosphaeridium
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Orygmatosphaeridium |
Orygmatosphaeridium
|
USSR(Russian Platform) |
Late Proterozoic |
Cambrian |
Protosphaeridium |
Protosphaeridium
|
USSR(Russian Platform) |
Late Proterozoic |
Cambrian |
Protosphaeridium |
Protosphaeridium
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Pseudozonosphaeridium |
Pseudozonosphaeridium
|
USSR(Russian Platform) |
Late Proterozoic |
Cambrian |
Pseudozonosphaeridium |
Pseudozonosphaeridium
|
USSR(Russian Platform) |
Early Gothlandian |
Late Gothlandian |
Retusotriletes |
Retusotriletes
|
USSR(Russian Platform) |
Late Gothlandian |
|