Leiofusa |
Leiofusa cylindrica
|
Brazil(Maranhao) |
Early Devonian |
|
Leiofusa |
Leiofusa minuta
|
Canada(Ontario) |
Couvinian |
|
Leiofusa |
Leiofusa multistriata
|
Brazil(Maranhao) |
Middle Devonian |
Late Devonian |
Leiofusa |
Leiofusa navicula
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Leiofusa |
Leiofusa tenuis
|
USSR(Estonian SSR) |
Late Ordovician |
|
Micrhystridium |
Micrhystridium
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium lappum
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium lunatum
|
Belgium |
Tournaisian |
|
Micrhystridium |
Micrhystridium subbifurcatum
|
Belgium |
Tournaisian |
|
Multiplicisphaeridium |
Multiplicisphaeridium
|
Ohio |
Late Devonian |
Early Mississippian |
Multiplicisphaeridium |
Multiplicisphaeridium absonum
|
Ohio |
Tournaisian |
|
Multiplicisphaeridium |
Multiplicisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Multiplicisphaeridium |
Multiplicisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Multiplicisphaeridium |
Multiplicisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Multiplicisphaeridium |
Multiplicisphaeridium chagrinense
|
Ohio |
Famennian |
|
Multiplicisphaeridium |
Multiplicisphaeridium cuspide
|
Ohio |
Tournaisian |
|
Multiplicisphaeridium |
Multiplicisphaeridium exornatum
|
Canada(Ontario) |
Late Devonian |
|