Wikipedia
Ataphridae
Ataphridae, common name the false top snails, is a family of sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
This family is unassigned to superfamily. This family has no subfamilies. The subfamily Acremodontinae is a synonym of Ataphridae.