Genus Genus-B
- Species total:
- 9
- Age range:
- 456.67 - 73.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Genus-B | Late Santonian | Late Santonian |
|
| Genus-B sp | Early Frasnian | Early Campanian |
|
| Genus-B sp.1 | Erian | Coniacian |
|
| Genus-B sp.2 | Late Ordovician | Late Ordovician |
|
| Genus-B sp.A | Pennsylvanian | Late Santonian |
|
| Genus-B sp.B | Late Eifelian | Early Givetian |
|
| Genus-B sp.C | Late Santonian | Late Santonian |
|
| Genus-B sp.D | Middle Santonian | Middle Santonian |
|
| Genus-B sp.E | Early Santonian | Early Santonian |
|