Hystrichosphaeridium |
Hystrichosphaeridium pateum
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium hirsutoides
|
USSR(Russian Platform) |
Tremadocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium rotundatum
|
USSR(Russian Platform) |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium enodum
|
USSR(Russian Platform) |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium commune
|
USSR(Russian Platform) |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium punctulatum
|
USSR(Russian Platform) |
Tremadocian |
|
Acanthodiacrodium |
Acanthodiacrodium convexum
|
USSR(Russian Platform) |
Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium palmatilobum
|
USSR(Russian Platform) |
Tremadocian |
|
Leiofusa |
Leiofusa vittatum
|
USSR(Russian Platform) |
Tremadocian |
|
Leiofusa |
Leiofusa sp
|
USSR(Russian Platform) |
Tremadocian |
|
Orygmatosphaeridium |
Orygmatosphaeridium rubiginosum
|
USSR(Russian Platform) |
Early Cambrian |
|
Lophosphaeridium |
Lophosphaeridium crispum
|
USSR(Russian Platform) |
Early Cambrian |
|
Zonosphaeridium |
Zonosphaeridium disterminum
|
USSR(Russian Platform) |
Early Cambrian |
|
Trachysphaeridium |
Trachysphaeridium incrassatum
|
USSR(Russian Platform) |
Early Cambrian |
|
Trachysphaeridium |
Trachysphaeridium induratum
|
USSR(Russian Platform) |
Early Cambrian |
|
Protoleiosphaeridium |
Protoleiosphaeridium prolixum
|
USSR(Russian Platform) |
Early Cambrian |
|
Protoleiosphaeridium |
Protoleiosphaeridium marmoratum
|
USSR(Russian Platform) |
Early Cambrian |
|