Nematomorpha Vejdovsky, 1886

Choetia Desmarest, 1845

Corallioscolex Müller & Hinz-Schallreuter, 1993

Fistulidus Rafinesque, 1815

Geonema Rafinesque, 1832

Gordioidea Rauther, 1930

Nectonematoidea Rauther, 1930

Ophelmis Rafinesque, 1832

Palaeoscolecida

Paragordiidae

Seta Lamarck, 1801