Protosphaeridium |
Protosphaeridium flexuosum
|
USSR(Nenets Nat.Okrug) |
Precambriam |
|
Protosphaeridium |
Protosphaeridium fulvastrum
|
USSR(Nenets Nat.Okrug) |
Early Vendian |
|
Protosphaeridium |
Protosphaeridium laccatum
|
USSR(Nenets Nat.Okrug) |
Precambriam |
|
Protosphaeridium |
Protosphaeridium pusillum
|
USSR(Nenets Nat.Okrug) |
Precambriam |
|
Pterospermopsimorpha |
Pterospermopsimorpha annularis
|
USSR(Nenets Nat.Okrug) |
Early Vendian |
Cambrian |
Synsphaeridium |
Synsphaeridium conglutinatum
|
USSR(Nenets Nat.Okrug) |
Riphean |
Vendian |
Synsphaeridium |
Synsphaeridium sorediforme
|
USSR(Nenets Nat.Okrug) |
Early Riphean |
Middle Riphean |
Tasmanites |
Tasmanites tenellus
|
USSR(Nenets Nat.Okrug) |
Cambrian |
|
Trachyminuscula |
Trachyminuscula rugosa
|
USSR(Nenets Nat.Okrug) |
Late Riphean |
|
Trachysphaeridium |
Trachysphaeridium araneosum
|
USSR(Nenets Nat.Okrug) |
Precambriam |
|
Trachysphaeridium |
Trachysphaeridium attenuatum
|
USSR(Nenets Nat.Okrug) |
Late Riphean |
|
Trachysphaeridium |
Trachysphaeridium debilum
|
USSR(Nenets Nat.Okrug) |
Late Riphean |
|
Trachysphaeridium |
Trachysphaeridium laminaritum
|
USSR(Nenets Nat.Okrug) |
Precambriam |
|
Trachysphaeridium |
Trachysphaeridium patellare
|
USSR(Nenets Nat.Okrug) |
Precambriam |
Middle Riphean |
Trachysphaeridium |
Trachysphaeridium ruminatum
|
USSR(Nenets Nat.Okrug) |
Middle Riphean |
Late Riphean |
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Nenets Nat.Okrug) |
Middle Riphean |
Late Riphean |
Trematosphaeridium |
Trematosphaeridium holtedahlii
|
USSR(Nenets Nat.Okrug) |
Middle Riphean |
|