Maxillopoda Dahl, 1956
Akessonia Bresciani & Lützen, 1962
Ameristocheres Pelseneer, 1928
Antheacheridae Sars, 1870
Archinotodelphyidae Lang, 1949
Arthurhumesia Bresciani & Lopez-Gonzalaz, 2001
Ascidicolidae Thorell, 1860
Axinophilus Bresciani & Ockelmann, 1966
Botryllophilidae Sars G.O., 1921
Bradyophilidae
Buproridae Thorell, 1859
Capistrum Monniot, 1985
Catiniidae Bocquet & Stock, 1957
Catlaphilidae Tripathi, 1960
Catlaphilla Tripathi, 1960
Chelonidiformes
Chordeumiidae Boxshall, 1988
Coleoptrophus
Cucumaricolidae Bouligand & Delamare-Deboutteville, 1959
Cyclopettidae Martínez Arbizu, 2000
Cyclopicinidae Sars G.O., 1913
Cyclopidae Dana, 1846
Cyclopinidae Sars, 1913
Enterognathidae Illg & Dudley, 1980
Enteropsidae Thorell, 1859
Eunicicolidae Sars, 1918
Fratiidae Ho, Conradi & López-González, 1998
Giselinidae Martínez Arbizu, 2000
Gonophysema Bresciani & Lützen, 1960
Grandiunguidae Pearse, 1852
Hemicyclopinidae Martínez Arbizu, 2001
Hesseius Özdikmen, 2008
Ive Mayer, 1879
Lernaeidae Cobbold, 1879
Lobosomatium Stock, 1995
Mantridae Leigh-Sharpe, 1934
Myticola
Nisis
Notodelphyidae Dana, 1852
Oithonidae Dana, 1852
Ophelicola Laubier, 1987
Ozmanidae Ho & Thatcher, 1989
Philoblennidae Izawa, 1976
Platythorax Hesse, 1866
Praxinicola
Psammocyclopinidae Martínez Arbizu, 2001
Pterinopsyllidae Sars G.O., 1913
Ruthra Kim I.H., 2003
Schminkepinellidae Martínez Arbizu, 2006
Siphonobius Augener, 1903
Smirnovipinidae Martínez Arbizu, 1997
Speleoithonidae da Rocha & Iliffe, 1991
Synapticolidae Humes & Boxshall, 1996
Tarificola López-González, Bresciani & Conradi, 1998
Thaumatoessa Krøyer, 1842
Thaumatopsyllidae Sars, 1913
Ubius Kesteven, 1913
Xarifiidae Humes, 1960
