'''Neritopsidae''' is a [[family (biology)|family]] of small sea snails and freshwater snails, [[aquatic animal|aquatic]] [[gastropod]] [[mollusk]]s in the clade [[Cycloneritimorpha]] (according to the [[Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)|taxonomy of the Gastropoda by Bouchet & Rocroi, 2005]]).
The great majority of species within this family are only known as fossils. The few species which are still extant are sometimes termed "living fossils". [http://www.mnhn.fr/museum/front/medias/publication/18145_z09n1a10.pdf]