Name | From | To | Age range |
---|---|---|---|
Duvernaysphaera polyfulcracea | Wenlockian | Wenlockian |
|
Duvernaysphaera siderea | Telychian | Telychian |
|
Duvernaysphaera magna | Wenlockian | Wenlockian |
|
Duvernaysphaera oa | Gedinnian | Gedinnian |
|
Duvernaysphaera jelinii | Silurian | Silurian |
|
Duvernaysphaera elongata | Late Llandoverian | Late Llandoverian |
|
Duvernaysphaera actinota | Gedinnian | Gedinnian |
|