Gonyaulacysta |
Gonyaulacysta exilicristata
|
Atlantic Coast Offshore |
Late Aptian |
Middle Albian |
Gonyaulacysta |
Gonyaulacysta helicoidea
|
Atlantic Coast Offshore |
Late Tithonian |
Vraconian |
Gonyaulacysta |
Gonyaulacysta helicoidea
|
France |
Berriasian |
Hauterivian |
Gonyaulacysta |
Gonyaulacysta jurassica
|
Atlantic Coast Offshore |
Oxfordian |
Early Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta nuciformis
|
Atlantic Coast Offshore |
Late Oxfordian |
Tithonian |
Heslertonia |
Heslertonia heslertonensis
|
France |
Late Berriasian |
Hauterivian |
Histiophora |
Histiophora ornata
|
Atlantic Coast Offshore |
Late Kimmeridgian |
|
Histiophora |
Histiophora sp
|
Atlantic Coast Offshore |
Late Oxfordian |
Middle Tithonian |
Hystrichodinium |
Hystrichodinium furcatum
|
France |
Late Valanginian |
Hauterivian |
Hystrichodinium |
Hystrichodinium pulchrum
|
France |
Late Berriasian |
Hauterivian |
Hystrichodinium |
Hystrichodinium voigtii
|
Atlantic Coast Offshore |
Late Berriasian |
Early Aptian |
Hystrichogonyaulax |
Hystrichogonyaulax pectinigera
|
Atlantic Coast Offshore |
Middle Callovian |
Early Oxfordian |
Hystrichosphaeridium |
Hystrichosphaeridium arundum
|
Atlantic Coast Offshore |
Late Aptian |
Vraconian |
Hystrichosphaerina |
Hystrichosphaerina orbifera
|
Atlantic Coast Offshore |
Middle Callovian |
Early Kimmeridgian |
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
France |
Hauterivian |
|
Kallosphaeridium |
Kallosphaeridium sp
|
Atlantic Coast Offshore |
Barremian |
Aptian |
Kleithriasphaeridium |
Kleithriasphaeridium fasciatum
|
France |
Late Berriasian |
Hauterivian |