Genus Pentagonum
- Species total:
- 7
- Age range:
- 76 - 22.5 MA (obsolete dating)
- IRMNG:
- find
Name | From | To | Age range |
---|---|---|---|
Pentagonum | Paleocene | Paleocene |
|
Pentagonum conicoides | Paleocene | Paleocene |
|
Pentagonum granulatum | Late Eocene | Late Eocene |
|
Pentagonum huanghuaense | Late Eocene | Late Oligocene |
|
Pentagonum marginatum | Early Paleocene | Danian |
|
Pentagonum sibiricum | Campanian | Early Eocene |
|
Pentagonum sp | Early Oligocene | Middle Oligocene |
|