Ancyrospora |
Ancyrospora grandispinosa
|
Canada |
Eifelian |
Frasnian |
Ancyrospora |
Ancyrospora langii
|
England |
Givetian |
Frasnian |
Ancyrospora |
Ancyrospora langii
|
Wales |
Givetian |
Frasnian |
Ancyrospora |
Ancyrospora langii
|
France |
Givetian |
Frasnian |
Ancyrospora |
Ancyrospora langii
|
Spain |
Givetian |
Frasnian |
Apiculiretusispora |
Apiculiretusispora synorea
|
Africa(Sahara) |
Downtonian |
|
Apiculiretusispora |
Apiculiretusispora synorea
|
England |
Ludlovian |
Downtonian |
Apiculiretusispora |
Apiculiretusispora synorea
|
Wales |
Ludlovian |
Downtonian |
Archaeoperisaccus |
Archaeoperisaccus
|
Canada |
Frasnian |
Famennian |
Archaeoperisaccus |
Archaeoperisaccus
|
USSR(Russian Platform) |
Frasnian |
|
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Africa(Sahara) |
Ludlovian |
Downtonian |
Archaeozonotriletes |
Archaeozonotriletes chulus
|
England |
Wenlockian |
Siegenian |
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Wales |
Wenlockian |
Siegenian |
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Scotland |
Emsian |
|
Archaeozonotriletes |
Archaeozonotriletes chulus
|
Canada |
Gedinnian |
Siegenian |
Archaeozonotriletes |
Archaeozonotriletes variabilis
|
England |
Givetian |
Frasnian |
Archaeozonotriletes |
Archaeozonotriletes variabilis
|
Wales |
Givetian |
Frasnian |