Genus Oligosphaeridium
- Species total:
- 103
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Oligosphaeridium sp.4 | Nd | Nd |
|
| Oligosphaeridium sp.5 | Early Oligocene | Middle Oligocene |
|
| Oligosphaeridium sp.6 | Early Oligocene | Middle Oligocene |
|
| Oligosphaeridium sp.A | Kimmeridgian | Cenomanian |
|
| Oligosphaeridium sp.A Bren.,1992 | Middle Berriasian | Late Berriasian |
|
| Oligosphaeridium sp.A Brid.,1971 | Aptian | Late Albian |
|
| Oligosphaeridium sp.A De C.,1986 | Bartonian | Bartonian |
|
| Oligosphaeridium sp.A Duan.,1996 | Valanginian | Valanginian |
|
| Oligosphaeridium sp.A Khow.& Jain,1992 | Hauterivian | Barremian |
|
| Oligosphaeridium sp.A Sumn.,1992 | Campanian | Late Campanian |
|
| Oligosphaeridium sp.A Will.& Brid.,1975 | Late Hauterivian | Santonian |
|
| Oligosphaeridium sp.Ab | Hauterivian | Early Albian |
|
| Oligosphaeridium sp.B | Late Aptian | Late Aptian |
|
| Oligosphaeridium sp.B Brid.,1971 | Aptian | Late Albian |
|
| Oligosphaeridium sp.B Khow.& Jain,1992 | Hauterivian | Barremian |
|
| Oligosphaeridium sp.C | Albian | Albian |
|
| Oligosphaeridium sp.D | Albian | Albian |
|