Achomosphaera |
Achomosphaera ramulifera
|
Canada(Saskatchewan) |
Campanian |
|
Achomosphaera |
Achomosphaera ramulifera
|
Canada(Manitoba) |
Campanian |
|
Achomosphaera |
Achomosphaera ramulifera
|
Texas |
Campanian |
|
Alterbia |
Alterbia acuminata
sp. nov. |
Canada(Saskatchewan) |
Campanian |
|
Alterbia |
Alterbia acuminata
sp. nov. |
Canada(Manitoba) |
Campanian |
|
Alterbia |
Alterbia acutula
sp. nov. |
Canada(Saskatchewan) |
Campanian |
|
Alterbia |
Alterbia acutula
sp. nov. |
Canada(Manitoba) |
Campanian |
|
Alterbia |
Alterbia acutula
sp. nov. |
Wyoming |
Campanian |
|
Alterbia |
Alterbia dictyon
sp. nov. |
Wyoming |
Campanian |
|
Alterbia |
Alterbia dictyon
sp. nov. |
Canada(Saskatchewan) |
Campanian |
|
Alterbia |
Alterbia dictyon
sp. nov. |
Canada(Manitoba) |
Campanian |
|
Alterbia |
Alterbia minor
sp. nov. |
Canada(Manitoba) |
Campanian |
|
Alterbia |
Alterbia minor
sp. nov. |
Canada(Saskatchewan) |
Campanian |
|
Alterbia |
Alterbia minor
sp. nov. |
Canada(Alberta) |
Campanian |
|
Alterbia |
Alterbia minor
sp. nov. |
Wyoming |
Campanian |
|
Alterbia |
Alterbia minor
sp. nov. |
Texas |
Campanian |
|
Astrocysta |
Astrocysta ampla
|
Canada(Saskatchewan) |
Campanian |
|