Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
Oklahoma |
Cretaceous |
Miocene |
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
Oklahoma |
Late Eocene |
Early Oligocene |
Impletosphaeridium |
Impletosphaeridium erinaceum
|
Oklahoma |
Early Eocene |
|
Impletosphaeridium |
Impletosphaeridium sp
sp. nov. |
Oklahoma |
Early Eocene |
|
Lanternosphaeridium |
Lanternosphaeridium lanosum
|
Oklahoma |
Early Eocene |
|
Pleurozonaria |
Pleurozonaria concinna
|
Oklahoma |
Late Eocene |
Miocene |
Pleurozonaria |
Pleurozonaria cooksoniae
|
Oklahoma |
Early Oligocene |
Middle Oligocene |
Pleurozonaria |
Pleurozonaria fusanii
sp. nov. |
Poland |
Late Eocene |
Early Oligocene |
Pleurozonaria |
Pleurozonaria kedvesii
sp. nov. |
Poland |
Late Eocene |
|
Pleurozonaria |
Pleurozonaria minor
|
Oklahoma |
Early Oligocene |
|
Pleurozonaria |
Pleurozonaria stellulata
|
Oklahoma |
Eocene |
|
Pterospermella |
Pterospermella australiensis
|
Oklahoma |
Late Cretaceous |
Eocene |
Pterospermella |
Pterospermella barbarae
|
Oklahoma |
Late Cretaceous |
Early Oligocene |
Spiniferites |
Spiniferites ramosus
|
Oklahoma |
Cretaceous |
Pleistocene |
Tanyosphaeridium |
Tanyosphaeridium ellipticum
|
Oklahoma |
Late Oligocene |
|
Thalassiphora |
Thalassiphora pelagica
|
Oklahoma |
Late Eocene |
Oligocene |
Thalassiphora |
Thalassiphora succincta
|
Oklahoma |
Early Oligocene |
|