Symplassosphaeridium |
Symplassosphaeridium cambriense
|
Jordan |
Middle Cambrian |
|
Tunisphaeridium |
Tunisphaeridium caudatum
|
Jordan |
Late Llandoverian |
Wenlockian |
Tylotopalla |
Tylotopalla caelamenicutis
|
Jordan |
Llandoverian |
|
Tylotopalla |
Tylotopalla digitifera
|
Jordan |
Llandoverian |
|
Veryhachium |
Veryhachium horridum
|
Jordan |
Llanvirnian |
|
Veryhachium |
Veryhachium irroratum
|
Jordan |
Caradocian |
Ashgillian |
Veryhachium |
Veryhachium oklahomense
|
Jordan |
Caradocian |
Early Ashgillian |
Veryhachium |
Veryhachium subglobosum
|
Jordan |
Llanvirnian |
Ashgillian |
Villosacapsula |
Villosacapsula setosapellicula
|
Jordan |
Caradocian |
Ashgillian |
Visbysphaera |
Visbysphaera sp
|
Jordan |
Ludlovian |
|
Vulcanisphaera |
Vulcanisphaera africana
|
Jordan |
Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera africana
|
Jordan |
Tremadocian |
|
Vulcanisphaera |
Vulcanisphaera fermosa
|
Jordan |
Middle Cambrian |
|