Pterospermopsimorpha |
Pterospermopsimorpha annularis
|
USSR(Russian Platform) |
Late Riphean |
|
Pterospermopsimorpha |
Pterospermopsimorpha binata
|
USSR(Russian Platform) |
Late Riphean |
|
Pterospermopsimorpha |
Pterospermopsimorpha insolita
|
USSR(Russian Platform) |
Late Riphean |
|
Stictosphaeridium |
Stictosphaeridium
|
USSR(Russian Platform) |
Late Riphean |
|
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Russian Platform) |
Late Riphean |
|
Symplassosphaeridium |
Symplassosphaeridium tumidulum
|
USSR(Russian Platform) |
Late Riphean |
|
Synsphaeridium |
Synsphaeridium conglutinatum
|
USSR(Russian Platform) |
Late Riphean |
|
Trachysphaeridium |
Trachysphaeridium
|
USSR(Russian Platform) |
Late Riphean |
|
Trachysphaeridium |
Trachysphaeridium laminaritum
|
USSR(Russian Platform) |
Late Riphean |
|