Helicotomidae 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, 2005Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 categorizes Helicotomidae 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 Helicotomidae include:Helicotomidae. The Paleobiology Database, accessed 13 August 2009. Amphelissa Boucotspira Boucotspira Burdikinia - synonym: Polyamma. Colpomphalus Helicotoma Satler, 1859 - type genus of the family Helicotomidae Lophonema - synonym: Polhemia. Ophiletina Palaeomphalus Paraviviana Walcottoma Yochelsoniella
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