Protosphaeridium |
Protosphaeridium densum
|
USSR(Siberia) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium rigidulum
|
USSR(Siberia) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Siberia) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium sinapticuliferum
|
USSR(Siberia) |
Early Riphean |
|
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Siberia) |
Early Riphean |
|
Trematosphaeridium |
Trematosphaeridium sp
|
USSR(Siberia) |
Early Riphean |
|
Pterospermopsimorpha |
Pterospermopsimorpha kildinella
|
USSR(Siberia) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Siberia) |
Early Riphean |
|
Kildinella |
Kildinella hyperboreica
|
USSR(Siberia) |
Early Riphean |
|
Kildinella |
Kildinella sinica
|
USSR(Siberia) |
Early Riphean |
|
Stictosphaeridium |
Stictosphaeridium implexum
|
USSR(Siberia) |
Early Riphean |
|
Synsphaeridium |
Synsphaeridium conglutinatum
|
USSR(Siberia) |
Early Riphean |
|
Orygmatosphaeridium |
Orygmatosphaeridium sp
|
USSR(Siberia) |
Early Riphean |
|
Kildinella |
Kildinella tschapomica
|
USSR(Siberia) |
Early Riphean |
|
Kildinella |
Kildinella timanica
|
USSR(Siberia) |
Early Riphean |
|
Kildinella |
Kildinella rifeica
|
USSR(Siberia) |
Early Riphean |
|
Protosphaeridium |
Protosphaeridium ace
|
USSR(Siberia) |
Early Riphean |
|