Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium paucifurcatum | Early Tertiary | Early Tertiary |
|
| Hystrichosphaeridium paulinae | Bajocian | Bajocian |
|
| Hystrichosphaeridium pellicidum | Nd | Nd |
|
| Hystrichosphaeridium penicillatum | Late Oxfordian | Late Oxfordian |
|
| Hystrichosphaeridium pentaspinosum | Middle Clintonian | Late Clintonian |
|
| Hystrichosphaeridium perceptibile | Jurassic | Jurassic |
|
| Hystrichosphaeridium perforatum | Late Neocomian | Early Albian |
|
| Hystrichosphaeridium perifurcatum | Paleocene | Eocene |
|
| Hystrichosphaeridium peritropum | Arenigian | Arenigian |
|
| Hystrichosphaeridium perovatum | Albian | Albian |
|
| Hystrichosphaeridium perplexum | Eocene | Oligocene |
|
| Hystrichosphaeridium petilum | Jurassic | Barremian |
|
| Hystrichosphaeridium phoenix | Late Valanginian | Early Albian |
|
| Hystrichosphaeridium picorricum | Late Ordovician | Emsian |
|
| Hystrichosphaeridium pilosum | Oxfordian | Oxfordian |
|
| Hystrichosphaeridium piriferum | Silurian | Late Llandoverian |
|
| Hystrichosphaeridium placacantha | Miocene | Miocene |
|