Achomosphaera |
Achomosphaera neptuni
|
USA(Gulf of Mexico) |
Late Berriasian |
Aptian |
Achomosphaera |
Achomosphaera ramulifera
|
USA(Gulf of Mexico) |
Early Cenomanian |
Middle Cenomanian |
Acritarch |
Acritarch sp
|
USA(Gulf of Mexico) |
Late Berriasian |
Cenomanian |
Aprobolocysta |
Aprobolocysta varigranosa
|
USA(Gulf of Mexico) |
Late Berriasian |
Valanginian |
Aptea |
Aptea polymorpha
|
USA(Gulf of Mexico) |
Aptian |
|
Aptea |
Aptea securigera
|
USA(Gulf of Mexico) |
Cenomanian |
|
Apteodinium |
Apteodinium maculatum
|
USA(Gulf of Mexico) |
Late Berriasian |
Middle Cenomanian |
Athigmatocysta |
Athigmatocysta glabra
|
USA(Gulf of Mexico) |
Late Berriasian |
Valanginian |
Avellodinium |
Avellodinium falsificum
|
USA(Gulf of Mexico) |
Late Berriasian |
Valanginian |
Bacchidinium |
Bacchidinium polypes
|
USA(Gulf of Mexico) |
Cenomanian |
|
Batiacasphaera |
Batiacasphaera euteiches
|
USA(Gulf of Mexico) |
Middle Cenomanian |
|
Batioladinium |
Batioladinium gochtii
|
USA(Gulf of Mexico) |
Late Berriasian |
Valanginian |
Caddasphaera |
Caddasphaera halosa
|
USA(Gulf of Mexico) |
Late Berriasian |
Cenomanian |
Callaiosphaeridium |
Callaiosphaeridium asymmetricum
|
USA(Gulf of Mexico) |
Hauterivian |
|
Canningia |
Canningia sp
|
USA(Gulf of Mexico) |
Hauterivian |
Middle Cenomanian |
Cassiculosphaeridia |
Cassiculosphaeridia reticulata
|
USA(Gulf of Mexico) |
Early Cenomanian |
Middle Cenomanian |
Chlamydophorella |
Chlamydophorella huguoniotii
|
USA(Gulf of Mexico) |
Late Berriasian |
Cenomanian |