Dactylofusa |
Dactylofusa spinata
|
Belgium |
Silurian |
|
Dactylofusa |
Dactylofusa spinata
|
Czechoslovakia |
Late Caradocian |
|
Dactylofusa |
Dactylofusa spinata
|
Canada(Quebec) |
Middle Ordovician |
|
Dactylofusa |
Dactylofusa spinata
|
Argentina |
Late Gothlandian |
|
Dasydiacrodium |
Dasydiacrodium bicuspidatum
|
E.Germany |
Late Arenigian |
Early Llanvirnian |
Dasydiacrodium |
Dasydiacrodium glabrum
|
Algeria |
Early Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium longicornutum
|
Poland |
Late Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium ornatum
|
Algeria |
Early Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium polarum
|
France |
Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium polarum
|
Algeria |
Early Tremadocian |
|
Dasydiacrodium |
Dasydiacrodium ramusculosum
|
Algeria |
Early Tremadocian |
|
Dateriocradus |
Dateriocradus polydactylus
|
Belgium |
Tarannon |
|
Dateriocradus |
Dateriocradus polydactylus
|
Spain |
Wenlockian |
|
Dateriocradus |
Dateriocradus polydactylus
|
Kentucky |
Late Llandoverian |
|
Dateriocradus |
Dateriocradus polydactylus
|
Pennsylvania |
Late Llandoverian |
|
Deflandrastrum |
Deflandrastrum authierae
|
Libya |
Silurian |
|
Deflandrastrum |
Deflandrastrum authierae
|
Florida |
Ludlovian |
|