Ancyrospora |
Ancyrospora ancyrea
|
Spitsbergen |
Frasnian |
|
Ancyrospora |
Ancyrospora ancyrea
|
Germany |
Late Emsian |
|
Ancyrospora |
Ancyrospora ancyrea
|
Belgium |
Early Givetian |
|
Ancyrospora |
Ancyrospora grandispinosa
|
Scotland |
Late Eifelian |
|
Ancyrospora |
Ancyrospora grandispinosa
|
Canada |
Late Emsian |
|
Ancyrospora |
Ancyrospora grandispinosa
|
Germany |
Late Emsian |
|
Ancyrospora |
Ancyrospora longispinosa
|
Scotland |
Late Eifelian |
|
Ancyrospora |
Ancyrospora longispinosa
|
W.Germany |
Eifelian |
|
Ancyrospora |
Ancyrospora magnifica
|
Canada(Arctic) |
Frasnian |
|
Ancyrospora |
Ancyrospora reuta
|
Spitsbergen |
Emsian |
|
Ancyrospora |
Ancyrospora simplex
|
Spitsbergen |
Frasnian |
|
Ancyrospora |
Ancyrospora sp
|
Iowa |
Givetian |
|
Ancyrospora |
Ancyrospora sp
|
Canada(Arctic) |
Givetian |
|
Ancyrospora |
Ancyrospora trocha
|
Spitsbergen |
Emsian |
|
Aneurophyton |
Aneurophyton germanicum
|
Belgium |
Early Givetian |
|
Aneurospora |
Aneurospora goensis
|
Belgium |
Early Givetian |
|
Aneurospora |
Aneurospora goensis
|
Belgium |
Early Givetian |
|