Basopollis |
Basopollis obscurocostatus
|
Wyoming |
Paleocene |
Eocene |
Basopollis |
Basopollis obscurocostatus
|
Colorado |
Paleocene |
Eocene |
Basopollis |
Basopollis obscurocostatus
|
Montana |
Paleocene |
Eocene |
Basopollis |
Basopollis obscurocostatus
|
Canada(Yukon) |
Paleocene |
Eocene |
Complexiopollis |
Complexiopollis
|
USA(Rocky Mountains) |
Turonian |
Early Santonian |
Complexiopollis |
Complexiopollis
|
Canada(Alberta) |
Turonian |
Early Santonian |
Complexiopollis |
Complexiopollis sp
|
New Mexico |
Coniacian |
|
Interpollis |
Interpollis microsupplingensis
|
Colorado |
Eocene |
|
Interpollis |
Interpollis supplingensis
|
USA(Rocky Mountains) |
Maastrichtian |
|
Nudopollis |
Nudopollis terminalis
|
Wyoming |
Paleocene |
Eocene |
Nudopollis |
Nudopollis terminalis
|
Colorado |
Paleocene |
Eocene |
Nudopollis |
Nudopollis terminalis
|
Montana |
Paleocene |
Eocene |
Nudopollis |
Nudopollis terminalis
|
Canada(Yukon) |
Paleocene |
Eocene |
Plicapollis |
Plicapollis
|
USA(Rocky Mountains) |
Turonian |
Campanian |
Plicapollis |
Plicapollis
|
Canada(Alberta) |
Turonian |
Campanian |
Plicapollis |
Plicapollis
|
Canada(NWT) |
Turonian |
Campanian |
Plicapollis |
Plicapollis sp
|
New Mexico |
Santonian |
|