| Name | From | To | Age range |
|---|---|---|---|
| Isoetes ermayinensis | Triassic | Ladinian |
|
| Isoetes janaianus | Middle Jurassic | Late Jurassic |
|
| Isoetes elegans | Hettangian | Tithonian |
|
| Isoetes indicus | Aalenian | Albian |
|
| Isoetes subengelmanni | Late Cretaceous | Early Paleocene |
|
| Isoetes reticulata | Chattian | Burdigalian |
|
| Isoetes savatieri | Late Oligocene | Middle Miocene |
|
| Isoetes sp | Late Permian | Quaternary |
|
| Isoetes diviale | Tertiary | Quaternary |
|
| Isoetes lacustris | Tertiary | Quaternary |
|
| Isoetes | Mesozoic | Late Quaternary |
|
| Isoetes rajasthanensis | Eocene | Eocene |
|
| Isoetes echinospora | Late Neogene | Late Neogene |
|
| Isoetes coromandelina | Cenomanian | Cenomanian |
|
| Isoetes hystrix | Early Pliocene | Early Pliocene |
|
| Isoetes setaceum | Early Pliocene | Early Pliocene |
|
| Isoetes velatum | Early Pliocene | Early Pliocene |
|