Anthatractus |
Anthatractus insolitus
|
Canada |
Devonian |
|
Cymatiosphaera |
Cymatiosphaera canadensis
|
Canada |
Devonian |
|
Gorgonisphaeridium |
Gorgonisphaeridium suplicatum
|
Canada |
Frasnian |
|
Domasia |
Domasia bispinosa
|
England |
Wenlockian |
|
Deunffia |
Deunffia furcata
|
England |
Wenlockian |
|
Stephanelytron |
Stephanelytron redcliffense
|
England |
Late Jurassic |
|
Antrosphaera |
Antrosphaera calloviensis
|
England |
Late Jurassic |
|
Maranhites |
Maranhites mosesii
|
France |
Devonian |
|
Archaeletes |
Archaeletes
|
Nd |
Nd |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium
|
Nd |
Nd |
|
Aremoricanium |
Aremoricanium
|
Nd |
Nd |
|
Comasphaeridium |
Comasphaeridium
|
Nd |
Nd |
|
Coronifera |
Coronifera
|
Nd |
Nd |
|
Dioxya |
Dioxya
|
Nd |
Nd |
|
Felisphaeridium |
Felisphaeridium
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium
|
Nd |
Nd |
|
Multiplicisphaeridium |
Multiplicisphaeridium
|
Nd |
Nd |
|