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).