Maxillopoda Dahl, 1956
Acartiidae Sars, 1900
Aetideidae Giesbrecht, 1893
Antirhabdus Park, 2000
Arctokonstantinidae Markhaseva & Kosobokova, 2001
Arietellidae Sars, 1902
Augaptilidae Sars, 1905
Bathypontiidae Brodsky, 1950
Boholinidae Fosshagen & Iliffe, 1989
Boreotortanus Ohtsuka & Reid, 1998
Calanidae Dana, 1846
Candaciidae Giesbrecht, 1893
Centropagidae Giesbrecht, 1893
Clausocalanidae Giesbrecht, 1893
Diaixidae Sars, 1902
Diaptomidae Baird, 1850
Discoidae Gordejeva, 1975
Epacteriscidae Fosshagen, 1973
Eucalanidae Giesbrecht, 1893
Euchaetidae Giesbrecht, 1893
Fosshageniidae Suárez-Moráles & Iliffe, 1996
Heterorhabdidae Sars, 1902
Hyperbionychidae Ohtsuka, Roe & Boxshall, 1993
Kyphocalanidae Markhaseva & Schulz, 2009
Laymereria
Lucicutiidae Sars, 1902
Mariaediaptomus Stepanova, 1991
Mecynoceridae Andronov, 1973
Megacalanidae Sewell, 1947
Mesaiokeratidae Matthews, 1961
Metridinidae Sars, 1902
Nanodiaptomus Dang & Ho, 2003
Nullosetigeridae Soh, Ohtsuka, Imabayashi & Suh, 1999
Paracalanidae Giesbrecht, 1893
Parapontellidae Giesbrecht, 1893
Parkiidae Ferrari & Markhaseva, 1996
Phaennidae Sars, 1902
Pontellidae Dana, 1852
Pseudocyclopidae Giesbrecht, 1893
Pseudocyclopiidae Sars, 1902
Pseudodiaptomidae Sars, 1902
Rhincalanidae Geletin, 1976
Ridgewayiidae Wilson, 1958
Rostrocalanidae Markhaseva, Schulz & Martínez Arbizu, 2009
Ryocalanidae Andronov, 1974
Scolecitrichidae Giesbrecht, 1893
Spinocalanidae Vervoort, 1951
Stephidae Sars, 1902
Sulcanidae Nicholls, 1945
Temoridae Giesbrecht, 1893
Tharybidae Sars, 1902
Tortanidae Sars, 1902
