Polyedryxium |
Polyedryxium trifissile
sp. nov. |
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium venustum
|
Canada |
Devonian |
|
Pterospermopsis |
Pterospermopsis heol
sp. nov. |
Tunisia |
Devonian |
|
Pterospermopsis |
Pterospermopsis onondagaensis
|
Canada |
Devonian |
|
Pterospermopsis |
Pterospermopsis timofeevii
sp. nov. |
France |
Couvinian |
|
Veryhachium |
Veryhachium aculeatum
sp. nov. |
Canada |
Devonian |
|
Veryhachium |
Veryhachium anceps
sp. nov. |
Tunisia |
Devonian |
|
Veryhachium |
Veryhachium antonius
sp. nov. |
Tunisia |
Devonian |
|
Veryhachium |
Veryhachium aquilum
sp. nov. |
USA |
Early Devonian |
Middle Devonian |
Veryhachium |
Veryhachium asymmetricum
|
Tunisia |
Middle Devonian |
|
Veryhachium |
Veryhachium asymmetricum
|
Canada |
Middle Devonian |
|
Veryhachium |
Veryhachium carminae
|
Tunisia |
Devonian |
|
Veryhachium |
Veryhachium carthaginiense
sp. nov. |
Tunisia |
Devonian |
|
Veryhachium |
Veryhachium centrigerum
|
Canada |
Devonian |
|
Veryhachium |
Veryhachium cleopatra
sp. nov. |
Tunisia |
Devonian |
|
Veryhachium |
Veryhachium crucistellatum
|
Canada |
Devonian |
|
Veryhachium |
Veryhachium eisenackii
|
Canada |
Devonian |
|