Umbellasphaeridium |
Umbellasphaeridium
|
Brazil |
Late Devonian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Bolivia |
Late Devonian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Peru |
Late Devonian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Ghana |
Late Devonian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Ohio |
Strunian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Tennessee |
Strunian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Belgium |
Famennian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Ohio |
Strunian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Michigan |
Strunian |
|
Umbellasphaeridium |
Umbellasphaeridium
|
Canada(Ontario) |
Strunian |
|
Umbellasphaeridium |
Umbellasphaeridium deflandrei
|
Algeria |
Frasnian |
Strunian |
Umbellasphaeridium |
Umbellasphaeridium saharicum
|
Algeria |
Famennian |
Strunian |
Unellium |
Unellium winslowiae
|
Algeria |
Frasnian |
Famennian |
Visbysphaera |
Visbysphaera fecunda
|
Belgium |
Frasnian |
|