Eupoikilofusa |
Eupoikilofusa striatifera
|
USA(Eastern) |
Silurian |
|
Eupoikilofusa |
Eupoikilofusa striatifera
|
USA(Eastern) |
Llandoverian |
Pridolian |
Leiofusa |
Leiofusa communis
|
USA(Eastern) |
Llandoverian |
Early Ludlovian |
Leiofusa |
Leiofusa striatifera
|
USA(Eastern) |
Late Llandoverian |
Early Gedinnian |
Leiofusa |
Leiofusa striatifera
|
USA(Eastern) |
Silurian |
|
Leiofusa |
Leiofusa striatifera
|
USA(Eastern) |
Llandoverian |
Pridolian |
Leiofusa |
Leiofusa bispinosoides
|
USA(Eastern) |
Llandoverian |
Early Ludlovian |
Helios |
Helios aranaides
|
USA(Eastern) |
Late Llandoverian |
Early Wenlockian |
Acanthodiacrodium |
Acanthodiacrodium angustum
|
USSR |
Tremadocian |
|
Ooidium |
Ooidium timofeevii
|
USSR |
Tremadocian |
|
Lunulidia |
Lunulidia lunula
|
USSR |
Early Ordovician |
|
Multiplicisphaeridium |
Multiplicisphaeridium dendroideum
|
USSR(Russian Platform) |
Tremadocian |
|
Pirea |
Pirea ornata
|
USSR(Russian Platform) |
Early Ordovician |
|
Carminella |
Carminella maplewoodensis
|
Virginia |
Llandoverian |
Wenlockian |
Comasphaeridium |
Comasphaeridium williereae
|
Virginia |
Early Gothlandian |
Late Gothlandian |
Quadratum |
Quadratum fantasticum
|
Virginia |
Early Wenlockian |
|
Elektoriskos |
Elektoriskos pogonius
|
Virginia |
Silurian |
|