Nemertodermatida
Nemertodermatida is a class of Xenacoelomorpha, comprising 18 species of millimetre-sized turbellariform, mostly interstitial worms.
Taxonomy
The order Nemertodermatida contains two families with 6 genera. The high level of cryptic diversity in this meiofauna group however implies that the number of nemertodermatid taxa may be underestimated.Ascopariidae
The family Ascopariidae Sterrer, 1998 contains two genera.Ascoparia Sterrer, 1998Flagellophora Faubel & Dorjes, 1978There are 3 species in the family Ascopariidae.
| Name | Image | Distribution | Description |
| Ascoparia neglecta Sterrer, 1998 | |||
| Ascoparia secunda Sterrer, 1998 | |||
| Flagellophora apelti Faubel & Dorjes, 1978 |
Nemertodermatidae
The family Nemertodermatidae Steinböck, 1930 contains four genera.MearaNemertinoidesNemertodermaSterreriaThere are 15 species in the family Nemertodermatidae.
| Name | Image | Distribution | Description |
| Meara stichopi Westblad, 1949 | |||
| Nemertinoides elongatus Riser, 1987 | |||
| Nemertinoides glandulosum Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Nemertinoides wolfgangi Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Nemertoderma bathycola Steinböck, 1930 | |||
| Nemertoderma westbladi Steinbock, 1938 | |||
| Sterreria boucheti Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria lundini Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria martindalei Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria monolithes Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria papuensis Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria psammicola | |||
| Sterreria rubra | |||
| Sterreria variabilis Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 | |||
| Sterreria ylvae Meyer-Wachsmuth, Curini Galletti & Jondelius, 2014 |