| Aphanostoma virescens (Ørsted, 1845) | prior to 1879 | | | |
| Aphanostoma latissimum Levinsen, 1879 | 1879 | | | |
| Convoluta groenlandica Levinsen, 1879 | 1879 or earlier | | | in algae a foot under the surface. |
| Childia groenlandica (Levinsen, 1879) | 1879 or earlier | | | from Algae about one foot deep |
| Aphanostoma rhomboides Jensen, 1878 | 1879 or earlier | | | |
| Amphiscolops virescens (Örsted AS, 1845) | 1879 or earlier | | | |
| Mecynostomum cordiforme Levinsen, 1879 | 1879 or earlier | | | |
| Mecynostomum lentiferum Levinsen, 1879 | 1879 or earlier | | | |
| Microstomum groenlandicum Levinsen, 1879 | 1879 or earlier | | | |
| Polycystis groenlandica Levinsen, 1879 | prior to 1879 | | | |
| Provortex punctatus (Levinsen, 1879) | 1882 or earlier | | | in Disko Bay. |
| Jensenia angulata (Jensen, 1879) | 1913 or earlier | | | |
| Maehrenthalia agilis (Levinsen, 1879) | 1913 or earlier | | | lively animal in beach water. |
| Astrotorhynchus bifidus bifidus (McIntosh, 1874) | 1913 or earlier | | | |
| Promesostoma marmoratum (Schultze, 1851) | 1913 or earlier | | | very active, in marine and brackish water. |
| Promesostoma marmoratum marmoratum (Schultze, 1851) | 1913 or earlier | | | very active, in marine and brackish water. |
| Promesostoma ovoideum ovoideum Graff, 1905 | 1913 or earlier | | | |
| Polycystis crocea (Fabricius, 1826) | 1913 or earlier | | | |
| Polycystis assimilis (Levinsen, 1879) | 1882 or earlier | | | |
| Phonorhynchus helgolandicus (Metschnikow, 1865) | 1913 or earlier | | | |
| Plagiostomum caudatum Levinsen, 1879 | 1882 or earlier | | | |
| Monoophorum elongatum Gamble, 1879 | 1879 or earlier | | | |
| Enterostomum flavibacillum Jensen, 1878 | 1879 or earlier | | | |
| Allostoma album (Levinsen, 1879) | 1879 or earlier | | | |
| Allostoma oerstedi (Levinsen, 1879) | 1879 or earlier | | | |
| Allostoma discors (Levinsen, 1879) | 1879 or earlier | | | |
| Acmostomum groenlandicum Levinsen, 1879 | 1879 or earlier | | | |
| Monocelis lineata (Müller, 1773) | 1913 or earlier | | | |
| Monocelis hirudo Levinsen, 1879 | 1879 or earlier | | | |
| Graffia capitata Levinsen, 1879 | 1879 or earlier | | | |
| Anoplodium mytili Levinsen, 1879 | 1879 or earlier | | | parasite on gills of Mytilus edulis L. |
| Dalyellia rossi Graff, 1911 | 1879 or earlier | | | Steinbock notes that Levinsen's Vortex pictus identification was actually Dalyellia rossi. |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1879 or earlier | | | lakes and pools. |
| Astrotorhynchus bifidus bifidus (McIntosh, 1874) | 1932 or earlier | tidal - 10 m | | |
| Promesostoma marmoratum marmoratum (Schultze, 1851) | 1879 or earlier | | | |
| Jensenia angulata (Jensen, 1879) | 1879 or earlier | | | |
| Maehrenthalia agilis (Levinsen, 1879) | 1879 or earlier | | | |
| Mesostomum violaceum Levinsen, 1879 | 1879 or earlier | | | |
| Promesostoma ovoideum ovoideum Graff, 1905 | 1879 or earlier | | | |
| Promesostoma agile (Levinsen, 1879) | 1879 or earlier | | | |
| Rhynchomesostoma rostratum (Müller, 1774) | 1876 or earlier | | | pools and lakes. |
| Typhloplana viridata (Abildgaard, 1789) | 1879 or earlier | | | |
| Bothromesostoma personatum (Schmidt, 1848) | 1932 or earlier | | | pools. |
| Polycystis crocea (Fabricius, 1826) | 1879 or earlier | | | |
| Polycystis groenlandica Levinsen, 1879 | 1879 or earlier | intertidal | | |
| Polycystis assimilis (Levinsen, 1879) | 1879 or earlier | | | |
| Phonorhynchus helgolandicus (Metschnikow, 1865) | 1879 or earlier | | | |
| Provortex punctatus (Levinsen, 1879) | 1879 or earlier | | | |
| Plagiostomum caudatum Levinsen, 1879 | 1932 or earlier | | | |
| Monocelis lineata (Müller, 1773) | 1879 or earlier | | | |
| Coleophora hirudo (Levinsen, 1879) | 1879 or earlier | | | lives on Chionoecetes opilio mouth parts. |
| Mesostomum flabelliferum Levinsen, 1879 | prior to 1879 | | | |
| Ulianinia mollissima Levinsen, 1879 | 1963 or earlier | | | Karling notes distribution of the species. |
| Proporus cyclops Schmidt, 1848 | 1905 or earlier | | | Disko-Bai (Godhavn und Egedesminde) an der Küste von West-Grönland). |