Genus Helicosporium
- Species total:
- 5
- Age range:
- 65 - 0.01 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Helicosporium | Paleogene | Neogene |
|
| Helicosporium type A | Eocene | Eocene |
|
| Helicosporium sp. Thie.,1938 | Late Oligocene | Miocene |
|
| Helicosporium sp | Miocene | Pleistocene |
|
| Helicosporium type Kalg.& McIn.,1991 | Middle Miocene | Middle Miocene |
|