Genus Hystrichosphaeropsis
- Species total:
- 30
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeropsis | Mesozoic | Cenozoic |
|
| Hystrichosphaeropsis arctica | Late Oligocene | Miocene |
|
| Hystrichosphaeropsis borussica | Paleocene | Miocene |
|
| Hystrichosphaeropsis complanata | Maastrichtian | Middle Miocene |
|
| Hystrichosphaeropsis costae | Eocene | Lutetian |
|
| Hystrichosphaeropsis downiei | Kimmeridgian | Kimmeridgian |
|
| Hystrichosphaeropsis forficata | Late Campanian | Early Maastrichtian |
|
| Hystrichosphaeropsis galeata | Oxfordian | Turonian |
|
| Hystrichosphaeropsis irisiae | Maastrichtian | Late Maastrichtian |
|
| Hystrichosphaeropsis jubata | Maastrichtian | Maastrichtian |
|
| Hystrichosphaeropsis minimum | Badenian | Badenian |
|
| Hystrichosphaeropsis nuda | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeropsis obscura | Early Ypresian | Recent |
|
| Hystrichosphaeropsis ovatum | Nd | Nd |
|
| Hystrichosphaeropsis ovum | Early Cretaceous | Sarmatian |
|
| Hystrichosphaeropsis perforata | Late Campanian | Maastrichtian |
|
| Hystrichosphaeropsis pontiana | Middle Oligocene | Early Pliocene |
|