Nemertodermatida is a class of Acoelomorpha, comprising 18 species of millimetre-sized turbellariform, mostly interstitial worms.[1]
The order Nemertodermatida contains two families with 6 genera.[2] The high level of cryptic diversity in this meiofauna group however implies that the number of nemertodermatid taxa may be underestimated.[3]