Omphalocirridae

Omphalocirridae is an extinct family of Paleozoic molluscs (gastropods?) with anisostrophically coiled shells of uncertain position (Gastropoda?) (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Taxonomy
The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 categorizes Omphalocirridae in the superfamilia Euomphaloidea within the Paleozoic molluscs with anisostrophically coiled shells of uncertain position (Gastropoda?). This family has no subfamilies.

Genera
Genera in the family Omphalocirridae include:
 * Omphalocirrus Ryckholt, 1860 - type genus of the family Omphalocirridae - synonyms: Hypomphalocirrus and Arctomphalus.
 * Liomphalus