Dilatisphaera |
Dilatisphaera williereae
|
Canada(Quebec) |
Telychian |
|
Dilatisphaera |
Dilatisphaera williereae
|
England |
Telychian |
Ludlovian |
Dilatisphaera |
Dilatisphaera williereae
|
Belgium |
Aeronian |
Telychian |
Domasia |
Domasia limaciformis
|
Canada(Quebec) |
Gamachian |
|
Domasia |
Domasia sp
|
Wales |
Llandoverian |
Wenlockian |
Domasia |
Domasia sp
|
Canada(Quebec) |
Telychian |
|
Domasia |
Domasia sp
|
USA(Mid-Continent) |
Aeronian |
Wenlockian |
Domasia |
Domasia sp
|
USA(Appalachian Bn.) |
Aeronian |
Wenlockian |
Domasia |
Domasia sp
|
Poland |
Telychian |
Wenlockian |
Domasia |
Domasia sp
|
USSR(Baltic) |
Telychian |
Wenlockian |
Domasia |
Domasia sp
|
England |
Aeronian |
Wenlockian |
Domasia |
Domasia sp
|
Belgium |
Aeronian |
Wenlockian |
Domasia |
Domasia sp
|
Africa |
Wenlockian |
Ludlovian |
Eupoikilofusa |
Eupoikilofusa ampulliformis
|
Canada(Quebec) |
Rhuddanian |
|
Goniosphaeridium |
Goniosphaeridium oligospinosum
|
Canada(Quebec) |
Rhuddanian |
Telychian |
Goniosphaeridium |
Goniosphaeridium oligospinosum
|
USSR(Baltic) |
Caradocian |
Wenlockian |
Goniosphaeridium |
Goniosphaeridium oligospinosum
|
Poland |
Caradocian |
Wenlockian |