Dactylofusa |
Dactylofusa pectina
|
Nd |
Ludlovian |
Pridolian |
Dactylofusa |
Dactylofusa platynetrella
|
Oklahoma |
Ashgillian |
|
Dactylofusa |
Dactylofusa prima
|
Spain |
Ludlovian |
|
Dactylofusa |
Dactylofusa rhomba
|
New York |
Early Llandoverian |
|
Dactylofusa |
Dactylofusa rochesterensis
|
Canada(Ontario) |
Wenlockian |
|
Dactylofusa |
Dactylofusa saudiarabiae
|
Nd |
Late Wenlockian |
|
Dactylofusa |
Dactylofusa simplex
|
Nd |
Tremadocian |
|
Dactylofusa |
Dactylofusa spinata
|
Nd |
Middle Ordovician |
|
Dactylofusa |
Dactylofusa squama
|
Nd |
Devonian |
|
Dactylofusa |
Dactylofusa striata
|
Canada(Quebec) |
Caradocian |
|
Dactylofusa |
Dactylofusa striatifera
|
Spain |
Early Gedinnian |
|
Dactylofusa |
Dactylofusa striatifera
|
Africa(Sahara) |
Late Llandoverian |
|
Dactylofusa |
Dactylofusa striatifera
|
Nd |
Early Gedinnian |
|
Dactylofusa |
Dactylofusa striatogranulata
|
Nd |
Late Ordovician |
|
Dactylofusa |
Dactylofusa tenuistriata
|
Argentina(San Juan) |
Wenlockian |
|
Dactylofusa |
Dactylofusa velifera
|
Nd |
Tremadocian |
Arenigian |
Daillydium |
Daillydium
|
Nd |
Nd |
|