| Name | From | To | Age range |
|---|---|---|---|
| Osmunda strozzi | Meotian | Meotian |
|
| Osmunda sturii | Jurassic | Jurassic |
|
| Osmunda tenua | Valanginian | Valanginian |
|
| Osmunda tetpaga | Permian | Permian |
|
| Osmunda todites | Middle Triassic | Late Triassic |
|
| Osmunda triassica | Middle Triassic | Oxfordian |
|
| Osmunda tuberculata | Early Jurassic | Maastrichtian |
|
| Osmunda type Rudo.,1935 | Middle Eocene | Middle Eocene |
|
| Osmunda type Toku.,1955 | Middle Eocene | Middle Eocene |
|
| Osmunda vachellii | Late Neogene | Late Neogene |
|
| Osmunda wellmanii | Nd | Nd |
|