Protosphaeridium |
Protosphaeridium rugosum
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium compositum
|
USSR(Russian Platform) |
Early Gothlandian |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium corrugativum
|
USSR(Russian Platform) |
Late Gothlandian |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium kryshtofovichii
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium laminaritum
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium lucidum
|
USSR(Russian Platform) |
Late Gothlandian |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium magnum
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium muriceum
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium populosum
|
USSR(Russian Platform) |
Late Proterozoic |
|
Pseudozonosphaeridium |
Pseudozonosphaeridium sp
|
USSR(Russian Platform) |
Early Gothlandian |
|
Trachyarachnitum |
Trachyarachnitum fenestratum
|
USSR(Russian Platform) |
Middle Ordovician |
|
Trachyarachnitum |
Trachyarachnitum sp
|
USSR(Russian Platform) |
Middle Ordovician |
|
Trachyoligotriletes |
Trachyoligotriletes minutus
|
USSR(Russian Platform) |
Tremadocian |
|
Trachyoligotriletes |
Trachyoligotriletes minutus
|
USSR(Russian Platform) |
Early Ordovician |
|
Trachyoligotriletes |
Trachyoligotriletes minutus
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Trachysphaeridium |
Trachysphaeridium complanatum
|
USSR(Russian Platform) |
Early Cambrian |
|
Trachysphaeridium |
Trachysphaeridium incrassatum
|
USSR(Russian Platform) |
Early Cambrian |
|