Orthonychiidae
| Orthonychiidae Temporal range: Mid Ordovician–Devonian |
|
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Superfamily: | †Platyceratoidea |
| Family: |
†Orthonychiidae Bandel & Frýda, 1999 |
†Orthonychiidae is an extinct taxonomic family of fossil sea snails, marine, gastropod mollusks 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).
Genus Orthonychia Hall, 1843
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