Genus Polysphaeridium
- Species total:
- 82
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polysphaeridium sp.B | Cenomanian | Burdigalian |
|
| Polysphaeridium sp.AE | Early Valanginian | Middle Valanginian |
|
| Polysphaeridium sp.A Yun,1987 | Miocene | Miocene |
|
| Polysphaeridium sp.A Yun 1989 | Nd | Nd |
|
| Polysphaeridium sp.A Yun 1987 | Nd | Nd |
|
| Polysphaeridium sp.A Byun & Yun,1992 | Langhian | Langhian |
|
| Polysphaeridium sp.A Brow.& Down.,1985 | Nd | Nd |
|
| Polysphaeridium sp.A | Berriasian | Late Miocene |
|
| Polysphaeridium sp.4 Zait.,1967 | Late Cretaceous | Late Cretaceous |
|
| Polysphaeridium sp.4 | Maastrichtian | Maastrichtian |
|
| Polysphaeridium sp.3 | Maastrichtian | Maastrichtian |
|
| Polysphaeridium sp.2 | Late Albian | Late Albian |
|
| Polysphaeridium sp.1 | Berriasian | Early Pliocene |
|
| Polysphaeridium sp. Xu et al,1997 | Middle Eocene | Late Eocene |
|
| Polysphaeridium sp. Schu.& Chat.,1976 | Early Landenian | Early Landenian |
|
| Polysphaeridium sp. Saxe.& Rao,1984 | Early Miocene | Early Miocene |
|
| Polysphaeridium sp. Sala.,1991 | Campanian | Maastrichtian |
|