Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium polygonale | Ordovician | Ludlovian |
|
| Hystrichosphaeridium erraticum | Silurian | Late Ludlovian |
|
| Hystrichosphaeridium trifurcatum | Late Proterozoic | Early Devonian |
|
| Hystrichosphaeridium picorricum | Late Ordovician | Emsian |
|
| Hystrichosphaeridium toyetae | Ludlovian | Eifelian |
|
| Hystrichosphaeridium ramusculosum | Tremadocian | Givetian |
|
| Hystrichosphaeridium quadridactylites | Early Paleozoic | Late Devonian |
|
| Hystrichosphaeridium longispinosum | Early Cambrian | Early Mississippian |
|
| Hystrichosphaeridium ohioense | Late Devonian | Early Mississippian |
|
| Hystrichosphaeridium trispinosum | Ordovician | Mississippian |
|
| Hystrichosphaeridium nebulosum | Late Couvinian | Stephanian A |
|
| Hystrichosphaeridium caminuspinum | Early Sinemurian | Toarcian |
|
| Hystrichosphaeridium capillare | Triassic | Early Jurassic |
|
| Hystrichosphaeridium pumile | Bajocian | Bathonian |
|
| Hystrichosphaeridium vestitum | Jurassic | Callovian |
|
| Hystrichosphaeridium ehrenbergii | Jurassic | Callovian |
|
| Hystrichosphaeridium sp.Ca | Late Callovian | Early Oxfordian |
|