Wikipedia
Pseudococculinidae
Pseudococculinidae is a family of small sea snails or false limpets, marine gastropod mollusks in the superfamily Lepetelloidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
This family has no subfamilies. The species in this family are hermaphroditic. They can be found from sublittoral to hadal depths.