Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium majus | Cretaceous | Cretaceous |
|
| Hystrichosphaeridium rigens | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium type 11 | Oligocene | Oligocene |
|
| Hystrichosphaeridium grallaeforme | Oligocene | Oligocene |
|
| Hystrichosphaeridium ocuminatum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium sp. Olar.,1971 | Early Tertiary | Early Tertiary |
|
| Hystrichosphaeridium apiculatum | Ordovician | Ordovician |
|
| Hystrichosphaeridium cristatum | Tremadocian | Tremadocian |
|
| Hystrichosphaeridium scapigerum | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium sahii | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium sp. Sun,1994 | Eocene | Eocene |
|
| Hystrichosphaeridium entomium | Albian | Albian |
|
| Hystrichosphaeridium sp.13 | Miocene | Miocene |
|
| Hystrichosphaeridium exoticum | Famennian | Famennian |
|
| Hystrichosphaeridium maximum | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium sp.E Salu.et al,1969 | Early Eocene | Early Eocene |
|
| Hystrichosphaeridium sp.1 Math.,1964 | Eocene | Eocene |
|