Comasphaeridium |
Comasphaeridium arcetotricus
|
Ohio |
Late Devonian |
|
Comasphaeridium |
Comasphaeridium aremoricanum
|
France |
Middle Ordovician |
|
Comasphaeridium |
Comasphaeridium aurora
|
New York |
Wenlockian |
|
Comasphaeridium |
Comasphaeridium bacillum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Comasphaeridium |
Comasphaeridium brachyspinosum
|
USSR(Ukrainian SSR) |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium breve
|
Canada(British Columbia) |
Early Triassic |
|
Comasphaeridium |
Comasphaeridium brevispinosum
|
England |
Late Gothlandian |
|
Comasphaeridium |
Comasphaeridium caesariatum
|
Ohio |
Late Devonian |
|
Comasphaeridium |
Comasphaeridium caesariatum
|
Nd |
Nd |
|
Comasphaeridium |
Comasphaeridium campoae
|
Belgium |
Early Carboniferous |
|
Comasphaeridium |
Comasphaeridium canningia
|
Australia(W.Australia) |
Ordovician |
|
Comasphaeridium |
Comasphaeridium capillatum
|
USSR |
Middle Cambrian |
Late Cambrian |
Comasphaeridium |
Comasphaeridium capillum
|
USSR(Siberia) |
Silurian |
|
Comasphaeridium |
Comasphaeridium celtibericum
|
Nd |
Nd |
|
Comasphaeridium |
Comasphaeridium cerinum
|
Poland |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium cometes
|
France |
Middle Jurassic |
|
Comasphaeridium |
Comasphaeridium contractum
|
Australia(Queensland) |
Early Ordovician |
|