Estiastra |
Estiastra uruguaia
|
Uruguay |
Early Devonian |
|
Evittia |
Evittia remota
|
Canada |
Silurian |
Devonian |
Evittia |
Evittia remota
|
Algeria |
Wenlockian |
Late Gothlandian |
Evittia |
Evittia remota
|
Algeria |
Devonian |
|
Evittia |
Evittia remota
|
Canada |
Silurian |
Devonian |
Evittia |
Evittia sommeri
|
Brazil |
Early Devonian |
Middle Devonian |
Exilisphaeridium |
Exilisphaeridium
|
Nd |
Nd |
|
Exilisphaeridium |
Exilisphaeridium simplex
|
Ohio |
Early Carboniferous |
|
Filisphaeridium |
Filisphaeridium
|
Canada(Alberta) |
Scythian |
Anisian |
Filisphaeridium |
Filisphaeridium annolovaense
|
USSR(Russian Platform) |
Middle Cambrian |
|
Filisphaeridium |
Filisphaeridium araiothriches
|
Indiana |
Late Devonian |
|
Filisphaeridium |
Filisphaeridium ariakense
|
Japan(Kyushu I.) |
Pleistocene |
|
Filisphaeridium |
Filisphaeridium asagaiense
|
Japan |
Oligocene |
|
Filisphaeridium |
Filisphaeridium aspersum
|
China(Hopei) |
Oligocene |
|
Filisphaeridium |
Filisphaeridium aspersum
|
China(Hopei) |
Oligocene |
|
Filisphaeridium |
Filisphaeridium bacillum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Filisphaeridium |
Filisphaeridium baculatum
|
China |
Oligocene |
|