Hoegisphaera |
Hoegisphaera glabra
|
Canada |
Devonian |
|
Paleopedicistus |
Paleopedicistus rodeoensis
|
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium deflandrei
|
Canada |
Devonian |
|
Staplinium |
Staplinium hexaeder
|
Canada |
Early Triassic |
|
Wilsonastrum |
Wilsonastrum colonicum
|
Canada |
Early Triassic |
|
Duvernaysphaera |
Duvernaysphaera tenuicingulata
|
Canada(Alberta) |
Late Devonian |
|
Multiplicisphaeridium |
Multiplicisphaeridium ramispinosum
|
Canada(Alberta) |
Late Devonian |
|
Peridinites |
Peridinites parvulus
|
Caribbean |
Early Tertiary |
|
Margominuscula |
Margominuscula rugosa
|
China |
Precambriam |
|
Dapcodinium |
Dapcodinium priscus
|
Denmark |
Early Jurassic |
|
Palaeobion |
Palaeobion catenatum
|
Denmark |
Cretaceous |
|
Spongodinium |
Spongodinium delitiense
|
E.Germany |
Late Cretaceous |
|
Antrosphaera |
Antrosphaera calloviensis
|
England |
Late Jurassic |
|
Pluriarvalium |
Pluriarvalium osmingtonense
|
England |
Late Jurassic |
|
Polystephanephorus |
Polystephanephorus calathus
|
England |
Late Jurassic |
|
Chytroeisphaeridia |
Chytroeisphaeridia chytroeides
|
England |
Oxfordian |
|
Polystephanosphaera |
Polystephanosphaera valensii
|
England |
Oxfordian |
|