Anthatractus |
Anthatractus insolitus
|
Canada |
Devonian |
|
Aremoricanium |
Aremoricanium rigaudiae
|
France |
Silurian |
|
Cymatiosphaera |
Cymatiosphaera canadensis
|
Canada |
Devonian |
|
Cymatiosphaera |
Cymatiosphaera cuba
|
Canada |
Devonian |
|
Cymatiosphaera |
Cymatiosphaera fagonii
|
Canada |
Devonian |
|
Cymatiosphaera |
Cymatiosphaera nebulosa
|
France |
Devonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium lewisii
|
France |
Devonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium ramusculosum
|
France |
Silurian |
|
Micrhystridium |
Micrhystridium sericum
|
Canada |
Devonian |
|
Micrhystridium |
Micrhystridium stellatum
|
France |
Devonian |
|
Polyedryxium |
Polyedryxium bathyaster
|
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium deflandrei
|
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium diabolicum
|
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium pharaone
|
Canada |
Devonian |
|
Veryhachium |
Veryhachium mamillatum
|
Canada |
Devonian |
|
Veryhachium |
Veryhachium monacanthum
|
France |
Silurian |
|
Veryhachium |
Veryhachium trisulcum
|
France |
Silurian |
|