Polyedryxium |
Polyedryxium diabolicum
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium diabolicum
|
Tunisia |
Middle Devonian |
Late Devonian |
Polyedryxium |
Polyedryxium embudum
|
Nd |
Nd |
|
Polyedryxium |
Polyedryxium evolutum
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium helenaster
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium helenaster
|
Spain |
Early Devonian |
|
Polyedryxium |
Polyedryxium lelayii
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium membranaceum
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium minimum
sp. nov. |
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium mirum
|
Canada(Ontario) |
Early Devonian |
|
Polyedryxium |
Polyedryxium mirum
|
Nd |
Nd |
|
Polyedryxium |
Polyedryxium multifrons
sp. nov. |
Ohio |
Middle Devonian |
Late Devonian |
Polyedryxium |
Polyedryxium multifrons
sp. nov. |
Kentucky |
Middle Devonian |
Late Devonian |
Polyedryxium |
Polyedryxium nudatum
sp. nov. |
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium nudatum
sp. nov. |
France |
Late Devonian |
|
Polyedryxium |
Polyedryxium piveteauii
|
Canada(Ontario) |
Early Devonian |
Middle Devonian |
Polyedryxium |
Polyedryxium prismaticum
sp. nov. |
Canada(Ontario) |
Early Devonian |
Middle Devonian |