| Name | From | To | Age range |
|---|---|---|---|
| Isoetes | Mesozoic | Late Quaternary |
|
| Isoetes beutleri | Cenomanian | Cenomanian |
|
| Isoetes coromandelina | Cenomanian | Cenomanian |
|
| Isoetes diviale | Tertiary | Quaternary |
|
| Isoetes echinospora | Late Neogene | Late Neogene |
|
| Isoetes elegans | Hettangian | Tithonian |
|
| Isoetes ermayinensis | Triassic | Ladinian |
|
| Isoetes humilior | Nd | Nd |
|
| Isoetes hystrix | Early Pliocene | Early Pliocene |
|
| Isoetes indicus | Aalenian | Albian |
|
| Isoetes janaianus | Middle Jurassic | Late Jurassic |
|
| Isoetes lacustris | Tertiary | Quaternary |
|
| Isoetes macrospora | Cenomanian | Cenomanian |
|
| Isoetes malanopoda | Cenomanian | Cenomanian |
|
| Isoetes malinverniana | Oligocene | Oligocene |
|
| Isoetes rajasthanensis | Eocene | Eocene |
|
| Isoetes reticulata | Chattian | Burdigalian |
|