Orygmatosphaeridium |
Orygmatosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Oscillatorites |
Oscillatorites sp
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Phycomycetes |
Phycomycetes sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Protosphaeridium |
Protosphaeridium densum
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Protosphaeridium |
Protosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Pterospermopsimorpha |
Pterospermopsimorpha pileiformis
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Stictosphaeridium |
Stictosphaeridium implexum
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Symplassosphaeridium |
Symplassosphaeridium conglutinatum
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Trachysphaeridium |
Trachysphaeridium
|
USSR(Arkhangelsk Oblast) |
Riphean |
Early Cambrian |
Trachysphaeridium |
Trachysphaeridium attenuatum
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Trachysphaeridium |
Trachysphaeridium bavlense
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Trachysphaeridium |
Trachysphaeridium laminaritum
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Trachysphaeridium |
Trachysphaeridium magnum
|
USSR(Arkhangelsk Oblast) |
Vendian |
|
Trachysphaeridium |
Trachysphaeridium partiale
|
USSR(Arkhangelsk Oblast) |
Riphean |
Vendian |
Trachysphaeridium |
Trachysphaeridium uspenskyi
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Arkhangelsk Oblast) |
Riphean |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Arkhangelsk Oblast) |
Riphean |
|