Genus Impletosphaeridium
- Species total:
- 102
- Age range:
- 500 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Impletosphaeridium severinii | Paleocene | Rupelian |
|
| Impletosphaeridium selseyense | Early Eocene | Middle Eocene |
|
| Impletosphaeridium scalenofurcatum | Late Paleocene | Middle Miocene |
|
| Impletosphaeridium sarmentum | Late Oxfordian | Late Oxfordian |
|
| Impletosphaeridium rugosum | Paleocene | Middle Miocene |
|
| Impletosphaeridium regulatum | Middle Oligocene | Middle Oligocene |
|
| Impletosphaeridium radiculopse | Santonian | Maastrichtian |
|
| Impletosphaeridium pycnospinosum | Middle Oligocene | Late Oligocene |
|
| Impletosphaeridium prolatum | Miocene | Miocene |
|
| Impletosphaeridium primordiale | Ordovician | Ordovician |
|
| Impletosphaeridium polytrichum | Late Bajocian | Early Ryazanian |
|
| Impletosphaeridium polypes | Albian | Middle Eocene |
|
| Impletosphaeridium polyozum | Bartonian | Bartonian |
|
| Impletosphaeridium polyacanthum | Kimmeridgian | Kimmeridgian |
|
| Impletosphaeridium placacanthum | Middle Dogger | Middle Miocene |
|
| Impletosphaeridium petalum | Early Thanetian | Middle Eocene |
|
| Impletosphaeridium paucispinum | Paleocene | Paleocene |
|