Archaeozonotriletes |
Archaeozonotriletes chulus
|
Nd |
Aeronian |
Gedinnian |
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Libya |
Late Homerian |
Early Gorstian |
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Nd |
Gorstian |
Early Pridolian |
Artemopyra |
Artemopyra
|
Nd |
Nd |
|
Artemopyra |
Artemopyra brevicosta
|
England(Shropshire) |
Late Homerian |
|
Artemopyra |
Artemopyra brevicosta
|
England |
Homerian |
|
Artemopyra |
Artemopyra brevicosta
|
Libya |
Early Gorstian |
|
Artemopyra |
Artemopyra brevicosta
|
Nd |
Homerian |
Early Pridolian |
Attritasporites |
Attritasporites
|
Nd |
Nd |
|
Attritasporites |
Attritasporites messaoudii
|
Czechoslovakia |
Tremadocian |
|
Attritasporites |
Attritasporites scabrus
|
Czechoslovakia |
Tremadocian |
|
Attritasporites |
Attritasporites velatus
|
Czechoslovakia |
Tremadocian |
|
Breconisporites |
Breconisporites
|
Nd |
Nd |
|
Breconisporites |
Breconisporites breconensis
|
Wales |
Late Gedinnian |
|
Breconisporites |
Breconisporites breconensis
|
Nd |
Late Gedinnian |
|
Cheilotetras |
Cheilotetras
|
Nd |
Nd |
|
Cheilotetras |
Cheilotetras caledonica
|
Scotland |
Sheinwoodian |
|