Comasphaeridium |
Comasphaeridium williereae
|
Belgium |
Silurian |
|
Comasphaeridium |
Comasphaeridium woodii
|
Tennessee |
Early Cambrian |
|
Conaticystis |
Conaticystis densiconatus
|
Atlantic Ocean |
Cretaceous |
|
Conaticystis |
Conaticystis operosus
|
France |
Late Cretaceous |
|
Cymatiosphaera |
Cymatiosphaera mendax
|
France |
Silurian |
|
Cymatiosphaera |
Cymatiosphaera radiata
|
Nd |
Nd |
|
Dorsennidium |
Dorsennidium
|
Ohio |
Late Devonian |
|
Dorsennidium |
Dorsennidium abditum
|
Canada(Quebec) |
Late Ordovician |
|
Dorsennidium |
Dorsennidium ambiguum
|
Canada |
Early Devonian |
|
Dorsennidium |
Dorsennidium arcarium
|
Indiana |
Late Devonian |
|
Dorsennidium |
Dorsennidium belgicum
|
Belgium |
Late Devonian |
|
Dorsennidium |
Dorsennidium brevispinum
|
Israel |
Late Permian |
Triassic |
Dorsennidium |
Dorsennidium bulbiferum
|
France(Herault) |
Silurian |
|
Dorsennidium |
Dorsennidium cantabricum
|
Spain |
Late Gothlandian |
Devonian |
Dorsennidium |
Dorsennidium circumornatum
|
Canada(Quebec) |
Late Ordovician |
|
Dorsennidium |
Dorsennidium collectum
|
England(Dorset) |
Early Jurassic |
|
Dorsennidium |
Dorsennidium conispinosum
|
W.Germany(Hesse) |
Permian |
|