Baltisphaeridium |
Baltisphaeridium medium
|
Belgium |
Famennian |
|
Crassiangulina |
Crassiangulina
|
USSR(European) |
Carboniferous |
|
Crassiangulina |
Crassiangulina
|
USSR(Ukrainian SSR) |
Carboniferous |
|
Crassiangulina |
Crassiangulina
|
USSR(Siberia) |
Carboniferous |
|
Crassiangulina |
Crassiangulina
|
Spitsbergen |
Carboniferous |
|
Crassiangulina |
Crassiangulina
|
Canada(Alberta) |
Carboniferous |
|
Crassiangulina |
Crassiangulina
|
Saudi Arabia |
Carboniferous |
|
Crassiangulina |
Crassiangulina tesselita
|
Libya |
Late Frasnian |
|
Crassiangulina |
Crassiangulina tesselita
|
Algeria |
Famennian |
Strunian |
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
Ohio |
Late Famennian |
|
Gorgonisphaeridium |
Gorgonisphaeridium ohioense
|
Belgium |
Late Famennian |
Strunian |
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
Belgium |
Strunian |
|
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
Canada(Alberta) |
Late Devonian |
|
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
Ohio |
Late Devonian |
|
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
Iran |
Late Devonian |
|
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
China(Tibet) |
Late Devonian |
|
Gorgonisphaeridium |
Gorgonisphaeridium winslowiae
|
Canada(Alberta) |
Early Mississippian |
|