Genus Polysphaeridium
- Species total:
- 82
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polysphaeridium cephalum | Lutetian | Lutetian |
|
| Polysphaeridium sp. Kar,1979 | Oligocene | Oligocene |
|
| Polysphaeridium inflectospinum | Oligocene | Serravallian |
|
| Polysphaeridium sp. Mart.,1993 | Middle Oligocene | Late Oligocene |
|
| Polysphaeridium taiwanianum | Miocene | Miocene |
|
| Polysphaeridium sp. Saxe.& Rao,1984 | Early Miocene | Early Miocene |
|
| Polysphaeridium parvum | Miocene | Miocene |
|
| Polysphaeridium sp.A Yun,1987 | Miocene | Miocene |
|
| Polysphaeridium sp.A Byun & Yun,1992 | Langhian | Langhian |
|
| Polysphaeridium sulaimenii | Nd | Nd |
|
| Polysphaeridium sp.A Yun 1987 | Nd | Nd |
|
| Polysphaeridium sp.A Yun 1989 | Nd | Nd |
|
| Polysphaeridium pachydermum | Nd | Nd |
|
| Polysphaeridium sp.A Brow.& Down.,1985 | Nd | Nd |
|