Acriora |
Acriora petala
|
Ohio |
Famennian |
|
Ammonidium |
Ammonidium hamatum
|
Ohio |
Famennian |
|
Baltisphaeridium |
Baltisphaeridium aniae
|
Algeria |
Silurian |
|
Baltisphaeridium |
Baltisphaeridium apertum
|
W.Germany |
Late Llanvirnian |
|
Baltisphaeridium |
Baltisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Baltisphaeridium |
Baltisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Baltisphaeridium |
Baltisphaeridium areolatum
|
Algeria |
Late Gothlandian |
|
Baltisphaeridium |
Baltisphaeridium exornatum
|
Canada(Ontario) |
Late Devonian |
|
Barathrisphaeridium |
Barathrisphaeridium chagrinense
|
Ohio |
Famennian |
|
Barathrisphaeridium |
Barathrisphaeridium pumilispinosum
|
Ohio |
Famennian |
|
Diaphorochroa |
Diaphorochroa ganglia
|
Ohio |
Famennian |
|
Diexallophasis |
Diexallophasis absona
|
Ohio |
Tournaisian |
|
Diexallophasis |
Diexallophasis cuspidis
|
Ohio |
Tournaisian |
|
Exochoderma |
Exochoderma irregularis
|
Ohio |
Famennian |
|
Exochoderma |
Exochoderma ramibrachia
|
Ohio |
Famennian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sibiricum
|
USSR(Siberia) |
Late Ordovician |
|
Leiofusa |
Leiofusa brasiliensis
|
Brazil(Maranhao) |
Early Devonian |
|