Genus
Capulus Montfort, 1810
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Streptoneura |
| Superorder | Hypsogastropoda |
| Order | Littorinimorpha |
| Superfamily | Capuloidea |
| Family | Capulidae |
| Genus | Capulus |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Streptoneura |
| Superorder | Hypsogastropoda |
| Order | Littorinimorpha |
| Superfamily | Capuloidea |
| Family | Capulidae |
| Genus | Capulus |