The Alethopteridaceae are a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

of extinct plants belonging to

Pteridospermatophyta The term Pteridospermatophyta (or "seed ferns" or "Pteridospermatopsida") is a polyphyletic group of extinct seed-bearing plants (spermatophytes). The earliest fossil evidence for plants of this type is the genus ''Elkinsia'' of the late Devonian ...

, or seed ferns.

References

Pteridospermatophyta Carboniferous plants Permian plants Prehistoric plant families Carboniferous first appearances Permian extinctions {{permian-plant-stub