Gastrotricha Metschnikoff, 1865
Chaetonotidae Gosse, 1864
Dasyditidae
Dasydytidae Daday, 1905
Dichaeturidae Remane, 1927
Muselliferidae Leasi & Todaro, 2008
Neodasyidae Remane, 1929
Neogosseidae Remane, 1927
Proichthydiidae Remane, 1927
Xenotrichulidae Remane, 1927
