Acanthaulax |
Acanthaulax granulata
|
Germany |
Malm |
|
Alaskadinium |
Alaskadinium wigginsii
|
Alaska |
Neocomian |
|
Amiculosphaera |
Amiculosphaera umbraculum
|
Atlantic(Bay of Biscay) |
Pleistocene |
|
Andalusiella |
Andalusiella mauthei
|
Spain |
Senonian |
|
Apectodinium |
Apectodinium homomorphum
|
Australia(Victoria) |
Early Eocene |
|
Archeotectatum |
Archeotectatum sarjeantii
|
Atlantic Ocean(North) |
Oxfordian |
Kimmeridgian |
Arkellidinium |
Arkellidinium triapertum
|
England(Buckinghamshire) |
Late Callovian |
|
Athigmatocysta |
Athigmatocysta glabra
|
England |
Hauterivian |
|
Atlantodinium |
Atlantodinium jurassicum
|
Atlantic Ocean(Southeast) |
Kimmeridgian |
|
Atopodinium |
Atopodinium perforatum
|
England(Isle of Wight) |
Cenomanian |
|
Atopodinium |
Atopodinium polygonale
|
England(Dorset) |
Early Bathonian |
|
Atopodinium |
Atopodinium prostatum
|
W.Germany(Baden) |
Callovian |
|
Balmula |
Balmula tripenta
|
Kansas |
Late Albian |
|
Batioladinium |
Batioladinium jaegeri
|
W.Germany(Niedersachsen) |
Late Barremian |
|
Beaumontella |
Beaumontella langii
|
England(Dorset) |
Liassic |
|
Biconidinium |
Biconidinium longissimum
|
England |
Early Eocene |
|
Biorbifera |
Biorbifera johnewingii
|
Atlantic Ocean(North) |
Early Cretaceous |
|