Haplotaxida
Belladrilus Righi, 1984
Deccania Gates, 1949
Eukerria Michaelsen, 1895
Gatesia Jamieson, 1962
Gordiodrilus Beddard, 1892
Ilyogenia Beddard, 1893
Malabaria Stephenson, 1924
Nematogenia Eisen, 1900
Ocnerodrilus Eisen, 1878
Phoenicodrilus Eisen, 1895
Quechuona Gates, 1941
Thatonia Gates, 1942