Tylenchida

Allantonematidae

Anandranematidae Poinar, Jackson, Bell & Wahid, 2002

Anguinidae Nicoll, 1935

Atylenchidae

Belonolaimidae

Caloosiidae

Chondronematidae

Criconematidae Taylor, 1936

Dolichodoridae

Ecphyadophoridae

Entaphelenchidae

Fergusobiidae

Hemicycliophoridae

Heteroderidae

Hoplolaimidae

Iotonchiidae

Meloidogynidae

Neotylenchidae Thorne, 1949

Parasitylenchidae

Paratylenchidae

Pratylenchidae

Psilenchidae Paramonov, 1967

Rotylenchulidae

Sphaeronematidae

Sphaerulariidae

Sychnotylenchidae

Telotylenchidae

Tylenchidae Örley, 1880

Tylenchorhynchidae

Tylenchulidae