Exochosphaeridium |
Exochosphaeridium striolatum
|
Canada(Eastern Offshore) |
Campanian |
|
Gardodinium |
Gardodinium albertii
|
Nd |
Hauterivian |
|
Gardodinium |
Gardodinium deflandrei
|
Nd |
Albian |
Campanian |
Gardodinium |
Gardodinium deflandrei
|
Canada(Eastern Offshore) |
Campanian |
|
Gardodinium |
Gardodinium eisenackii
|
Nd |
Hauterivian |
Aptian |
Gardodinium |
Gardodinium trabeculosum
|
Nd |
Hauterivian |
Aptian |
Gillinia |
Gillinia hymenophora
|
Nd |
Campanian |
Maastrichtian |
Gonyaulacysta |
Gonyaulacysta apionis
|
Nd |
Albian |
|
Gonyaulacysta |
Gonyaulacysta axicerastes
|
Nd |
Middle Barremian |
|
Gonyaulacysta |
Gonyaulacysta cassidata
|
Nd |
Aptian |
Turonian |
Gonyaulacysta |
Gonyaulacysta helicoidea
|
Nd |
Aptian |
Early Turonian |
Gonyaulacysta |
Gonyaulacysta perforans
|
Nd |
Late Jurassic |
Albian |
Gonyaulacysta |
Gonyaulacysta tenuiceras
|
Nd |
Late Barremian |
Albian |
Gonyaulacysta |
Gonyaulacysta tenuiceras
|
Canada(Eastern Offshore) |
Santonian |
|
Heliodinium |
Heliodinium
|
Nd |
Valanginian |
Early Maastrichtian |
Heslertonia |
Heslertonia heslertonensis
|
Nd |
Late Hauterivian |
Barremian |
Hexagonifera |
Hexagonifera chlamydata
|
Nd |
Late Albian |
Campanian |