Dorsennidium |
Dorsennidium multiangulare
|
USSR |
Early Ordovician |
|
Dorsennidium |
Dorsennidium mutabile
|
Sweden |
Late Cambrian |
|
Dorsennidium |
Dorsennidium novum
|
USSR(Siberia) |
Early Gothlandian |
|
Dorsennidium |
Dorsennidium octospinosum
|
Canada(Alberta) |
Late Devonian |
|
Dorsennidium |
Dorsennidium oligospinoides
|
USSR(Estonian SSR) |
Middle Ordovician |
Late Ordovician |
Dorsennidium |
Dorsennidium parvum
|
USSR |
Middle Cambrian |
|
Dorsennidium |
Dorsennidium pastoris
|
Tunisia |
Devonian |
|
Dorsennidium |
Dorsennidium patulum
|
Ohio |
Late Devonian |
|
Dorsennidium |
Dorsennidium pertonense
|
England |
Wenlockian |
|
Dorsennidium |
Dorsennidium polyedricum
|
France |
Middle Jurassic |
|
Dorsennidium |
Dorsennidium polygonale
|
USSR(Estonian SSR) |
Early Ordovician |
|
Dorsennidium |
Dorsennidium primarium
|
USSR(Lithuanian SSR) |
Early Cambrian |
|
Dorsennidium |
Dorsennidium punctatum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Dorsennidium |
Dorsennidium pyriforme
|
Canada |
Jurassic |
|
Dorsennidium |
Dorsennidium quadratum
|
Germany |
Permian |
|
Dorsennidium |
Dorsennidium quadricorne
|
USSR |
Middle Cambrian |
|
Dorsennidium |
Dorsennidium raczii
|
Spain |
Early Devonian |
|