Drepanophycaceae is a family of extinct lycophytes[1] of Late Silurian to Late Devonian age (427 to 359 million years ago), found in North America, China, Russia, Europe, and Australia.

[2] Vascular bundle an exarch actinostele, tracheids of primitive annular or helical type (so-called G-type).

Leaves are unbranched microphylls several mm to 2 cm or more long with a single prominent vascular thread, arranged spirally to randomly on the stem.

Homosporous sporangia borne singly on the upper leaf surface or in an axillary position.

[3] Drepanophycaceae differs from a related family of the same period, Asteroxylaceae, in having vascularized microphylls;[3] see Drepanophycales for more details.