Riculasphaera |
Riculasphaera fissa
|
Oklahoma |
Late Gedinnian |
|
Rugulasphaeridium |
Rugulasphaeridium venustum
|
Kentucky |
Famennian |
|
Solatisphaera |
Solatisphaera sapra
|
Indiana |
Late Frasnian |
Early Famennian |
Solisphaeridium |
Solisphaeridium apodasmios
|
Indiana |
Late Frasnian |
Early Famennian |
Solisphaeridium |
Solisphaeridium apodasmios
|
Ohio |
Middle Famennian |
Late Famennian |
Solisphaeridium |
Solisphaeridium astrum
|
Ohio |
Givetian |
|
Solisphaeridium |
Solisphaeridium astrum
|
Indiana |
Late Frasnian |
Early Famennian |
Solisphaeridium |
Solisphaeridium astrum
|
Ohio |
Middle Famennian |
Late Famennian |
Solisphaeridium |
Solisphaeridium clavum
|
Ohio |
Middle Famennian |
Late Famennian |
Solisphaeridium |
Solisphaeridium folliculum
|
Ohio |
Middle Famennian |
Late Famennian |
Solisphaeridium |
Solisphaeridium spinoglobosum
|
Canada(Alberta) |
Frasnian |
Famennian |
Solisphaeridium |
Solisphaeridium spinoglobosum
|
Indiana |
Late Frasnian |
Early Famennian |
Solisphaeridium |
Solisphaeridium spinoglobosum
|
Ohio |
Middle Famennian |
Late Famennian |
Solisphaeridium |
Solisphaeridium spinoglobosum
|
Canada(Saskatchewan) |
Frasnian |
Famennian |
Solisphaeridium |
Solisphaeridium spinoglobosum
|
Canada(NWT) |
Frasnian |
Famennian |
Spurimoyeria |
Spurimoyeria falcilaculata
|
Indiana |
Late Frasnian |
Early Famennian |
Staplinium |
Staplinium cuboides
|
Canada(Ontario) |
Eifelian |
Givetian |