Archaeosacculina |
Archaeosacculina singularis
|
USSR(Urals) |
Early Vendian |
|
Archaeosacculina |
Archaeosacculina torosa
|
Nd |
Nd |
|
Aremoricanium |
Aremoricanium
|
Nd |
Nd |
|
Aremoricanium |
Aremoricanium carolineae
|
Nd |
Middle Ordovician |
|
Aremoricanium |
Aremoricanium cylindrosum
|
Nd |
Late Ordovician |
|
Aremoricanium |
Aremoricanium decoratum
|
Nd |
Llandeilian |
|
Aremoricanium |
Aremoricanium deflandrei
|
Nd |
Llanvirnian |
|
Aremoricanium |
Aremoricanium grootaertii
|
Nd |
Late Tremadocian |
|
Aremoricanium |
Aremoricanium matapediense
|
Nd |
Late Llandoverian |
|
Aremoricanium |
Aremoricanium rigaudiae
|
Nd |
Llandoverian |
|
Aremoricanium |
Aremoricanium siluricum
|
Nd |
Late Llandoverian |
|
Aremoricanium |
Aremoricanium simplex
|
Nd |
Llandeilian |
|
Aremoricanium |
Aremoricanium squarrosum
|
Nd |
Caradocian |
|
Aremoricanium |
Aremoricanium syringosage
|
Nd |
Ashgillian |
|
Aremoricanium |
Aremoricanium tenuiprocessum
|
Nd |
Late Llanvirnian |
|
Aremoricanium |
Aremoricanium tosotrichion
|
Nd |
Llandeilian |
|
Arkonia |
Arkonia
|
Nd |
Nd |
|