Genus Oligosphaeridium
- Species total:
- 103
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Oligosphaeridium nannus | Valanginian | Albian |
|
| Oligosphaeridium reticulatum | Valanginian | Early Campanian |
|
| Oligosphaeridium sp.A Duan.,1996 | Valanginian | Valanginian |
|
| Oligosphaeridium sp. Bjae.,1978 | Valanginian | Albian |
|
| Oligosphaeridium prolixispinosum | Valanginian | Paleocene |
|
| Oligosphaeridium suibinense | Valanginian | Hauterivian |
|
| Oligosphaeridium fenestratum | Middle Valanginian | Middle Barremian |
|
| Oligosphaeridium jixiense | Late Valanginian | Early Hauterivian |
|
| Oligosphaeridium sp.1 Heil.,1987 | Late Valanginian | Hauterivian |
|
| Oligosphaeridium porosum | Late Valanginian | Early Cenomanian |
|
| Oligosphaeridium amplexum | Early Hauterivian | Early Hauterivian |
|
| Oligosphaeridium sp.A Khow.& Jain,1992 | Hauterivian | Barremian |
|
| Oligosphaeridium junctum | Hauterivian | Hauterivian |
|
| Oligosphaeridium umbraculum | Early Hauterivian | Early Hauterivian |
|
| Oligosphaeridium sp.B Khow.& Jain,1992 | Hauterivian | Barremian |
|
| Oligosphaeridium verrucosum | Hauterivian | Middle Albian |
|
| Oligosphaeridium sp.Ab | Hauterivian | Early Albian |
|