Auroraspora |
Auroraspora torquata
|
Ohio |
Tournaisian |
|
Cymatiosphaera |
Cymatiosphaera labyrinthica
|
Ohio |
Famennian |
|
Cymatiosphaera |
Cymatiosphaera rhacoamba
|
Ohio |
Famennian |
|
Cymatiosphaera |
Cymatiosphaera velicarina
|
Ohio |
Tournaisian |
|
Diexallophasis |
Diexallophasis remota
|
Peru |
Frasnian |
|
Duvernaysphaera |
Duvernaysphaera radiata
|
Peru |
Frasnian |
|
Gorgonisphaeridium |
Gorgonisphaeridium elongatum
|
Ohio |
Famennian |
|
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
Ohio |
Famennian |
|
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
Michigan |
Tournaisian |
|
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
Canada(Ontario) |
Tournaisian |
|
Horologinella |
Horologinella quadrispina
|
Peru |
Frasnian |
|
Hymenozonotriletes |
Hymenozonotriletes famenensis
|
Ohio |
Famennian |
|
Hymenozonotriletes |
Hymenozonotriletes famenensis
|
Michigan |
Tournaisian |
|
Hymenozonotriletes |
Hymenozonotriletes famenensis
|
Canada(Ontario) |
Tournaisian |
|
Maranhites |
Maranhites brasiliensis
|
Peru |
Frasnian |
|
Maranhites |
Maranhites brasiliensis
|
Ohio |
Famennian |
|
Maranhites |
Maranhites brasiliensis
|
Michigan |
Tournaisian |
|