Retusidae is a family of very small sea snails, barrel-bubble snails, marine opisthobranch gastropod mollusks. These are headshield slugs, in the superfamily Bulloidea.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0