Cheleutochroa |
Cheleutochroa homoia
|
England |
Caradocian |
|
Chomotriletes |
Chomotriletes
|
Nd |
Nd |
|
Comasphaeridium |
Comasphaeridium agglutinatum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium brachyspinosum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium brachyspinosum
|
USSR(Russian Platform) |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium formosum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium molliculum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium strigosum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium strigosum
|
USSR(Russian Platform) |
Early Cambrian |
Middle Cambrian |
Comasphaeridium |
Comasphaeridium strigosum
|
Canada(Alberta) |
Early Tremadocian |
|
Comasphaeridium |
Comasphaeridium velvetum
|
Poland |
Early Cambrian |
|
Corollasphaeridium |
Corollasphaeridium wilcoxianum
|
Canada(Alberta) |
Early Tremadocian |
|
Corrugasphaera |
Corrugasphaera terranova
|
USSR(Russian Platform) |
Middle Cambrian |
|
Coryphidium |
Coryphidium
|
USSR(Russian Platform) |
Arenigian |
Llandoverian |
Coryphidium |
Coryphidium bohemicum
|
Canada(Newfoundland) |
Arenigian |
|
Crassiangulina |
Crassiangulina tesselita
|
Nd |
Frasnian |
Famennian |
Crassisphaeridium |
Crassisphaeridium inusitatum
|
Nd |
Nd |
|