Thelypteridaceae is a family of about 900 all thelypterioid ferns were included in the genus Dryopteris because of the sorus shape. However, there are a great many differences between the groups, and these plants are now segregated in their own family.
The Pteridophyte Phylogeny Group classification of 2016 (PPG I) accepts 30 genera:
- Abacopteris <small>Fée</small>
- Grypothrix <small>(Holttum) S.E.Fawc. & A.R.Sm.</small>
- Menisciopsis <small>(Holttum) S.E.Fawc. & A.R.Sm</small>
The extinct genus Holttumopteris from the Cenomanian aged Burmese amber has been suggested to have affinities with the family, but several important diagnostic characters are not preserved.