Family
Helicotomidae Wenz, 1938
List of species
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Eogastropoda |
| Order | Euomphalina |
| Superfamily | Euomphaloidea |
| Family | Anomphalidae |
| Elasmonematidae | |
| Euomphalidae | |
| Helicotomidae | |
| Genus | Boucotspira |
| Helicotoma | |
| Lophonema | |
| Palaeomphalus | |
| Family | Holopeidae |
| Lesueurillidae | |
| Pseudophoridae | |
| Raphistomatidae |