Impletosphaeridium |
Impletosphaeridium kroemmelbeinii
|
Atlantic Ocean |
Early Eocene |
|
Isabelia |
Isabelia belfastensis
|
Atlantic Ocean |
Middle Eocene |
Late Eocene |
Isabelia |
Isabelia cooksoniae
|
Atlantic Ocean |
Eocene |
|
Isabelia |
Isabelia cooksoniae
|
Atlantic Ocean |
Early Miocene |
|
Isabelia |
Isabelia cretacea
|
Atlantic Ocean |
Eocene |
|
Isabelia |
Isabelia cretacea
|
Atlantic Ocean |
Oligocene |
|
Kalyptea |
Kalyptea aceras
|
Atlantic Ocean |
Valanginian |
Cenomanian |
Kisselevia |
Kisselevia coleothrypta
|
Atlantic Ocean |
Early Eocene |
|
Kleithriasphaeridium |
Kleithriasphaeridium eoinodes
|
Atlantic Ocean |
Valanginian |
Barremian |
Kleithriasphaeridium |
Kleithriasphaeridium fasciatum
|
Atlantic Ocean |
Berriasian |
Hauterivian |
Lanternosphaeridium |
Lanternosphaeridium radiatum
|
Atlantic Ocean |
Early Eocene |
Middle Eocene |
Lejeunia |
Lejeunia fallax
|
Atlantic Ocean |
Middle Eocene |
Oligocene |
Lejeunia |
Lejeunia fallax
|
Atlantic Ocean |
Late Neogene |
|
Leptodinium |
Leptodinium paradoxum
|
Atlantic Ocean |
Middle Miocene |
Late Neogene |
Leptodinium |
Leptodinium patulum
|
Atlantic Ocean |
Late Eocene |
Pleistocene |
Leptodinium |
Leptodinium sp
|
Atlantic Ocean |
Early Cenomanian |
|
Leptolepidites |
Leptolepidites psarosus
|
Atlantic Ocean |
Albian |
|