Archaeodiscina |
Archaeodiscina umbonulata
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium cerinum
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium ciliosum
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Baltisphaeridium |
Baltisphaeridium compressum
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Baltisphaeridium |
Baltisphaeridium dubium
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium orbiculare
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium ornatum
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium papillosum
|
USSR(Russian Platform) |
Early Cambrian |
|
Baltisphaeridium |
Baltisphaeridium varium
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Cymatiosphaera |
Cymatiosphaera sp
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Deunffia |
Deunffia dentifera
|
USSR(Russian Platform) |
Early Cambrian |
|
Estiastra |
Estiastra minima
|
USSR(Russian Platform) |
Early Cambrian |
|
Granomarginata |
Granomarginata prima
|
USSR(Russian Platform) |
Early Cambrian |
|
Granomarginata |
Granomarginata squamacea
|
USSR(Russian Platform) |
Early Cambrian |
|
Leiomarginata |
Leiomarginata simplex
|
USSR(Russian Platform) |
Early Cambrian |
|
Leiosphaeridia |
Leiosphaeridia
|
USSR(Russian Platform) |
Vendian |
Middle Cambrian |
Leiosphaeridia |
Leiosphaeridia
|
USSR(Russian Platform) |
Early Cambrian |
|