Onychognathiidae is a family of worms belonging to the order Bursovaginoidea.

Genera: Goannagnathia Sterrer, 2001 Nanognathia Sterrer, 1972 Onychognathia Riedl, 1971 Valvognathia Kristensen & Nørrevang, 1978 Vampyrognathia Sterrer, 1998

References