Orthonychiidae

Orthonychiidae
Temporal range:
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: incertae sedis
Superfamily: Platyceratoidea
Family: Orthonychiidae
Bandel & Frýda, 1999

Orthonychiidae is an extinct family of fossil sea snails, marine, gastropod molluscs in the clade Cyrtoneritimorpha.

There is an unusually great degree of variability within the shells of species in the genus Orthonychia, but an analysis of this variability has not been done yet (2008).