Otoplanidae is a family of flatworms belonging to the order Proseriata. Members of the family are marine flatworms that typically inhabit the swash zone of sandy beaches worldwide.
Systematics Four subfamilies are recognised within Otoplanidae, distinguished mainly by the degree of ciliation of the body and the shape and position of the pharynx: Archotoplaninae, Bulbotoplaninae, Otoplaninae, and Parotoplaninae.
Genera
Genera: Alaskaplana Ax & Armonies, 1990 Americanaplana Ax & Ax, 1967 Archotoplana Ax, 1956
References