Acanthaspidiidae Menzies, 1962 (additional source)
Acartiidae Sars G.O., 1903 (additional source)
Acrothoracica (additional source)
Aegisthidae Giesbrecht, 1893 (additional source)
Aetideidae Giesbrecht, 1892-1893 (additional source)
Alpheoidea Rafinesque, 1815 (additional source)
Amathillopsidae Pirlot, 1934 (additional source)
Ambunguipedidae Huys, 1990 accepted as Hamondiidae Huys, 1990 (additional source)
Ameiridae Boeck, 1865 (additional source)
Ampeliscidae Krøyer, 1842 (additional source)
Amphilochidae Boeck, 1871 (additional source)
Amphipoda (additional source)
Ampithoidae Boeck, 1871 (additional source)
Ancorabolidae Sars G.O., 1909 (additional source)
Anomopoda (basis of record)
Anomura (additional source)
Anostraca (basis of record)
Antheluridae Poore & Lew Ton, 1988 (additional source)
Anthessiidae Humes, 1986 (additional source)
Anthuridae Leach, 1814 (additional source)
Anthuridea accepted as Anthuroidea Leach, 1814 (additional source)
Anuropidae Stebbing, 1893 (basis of record)
Aoridae Stebbing, 1899 (additional source)
Archaeobalanidae Newman & Ross, 1976 accepted as Archaeobalaninae Newman & Ross, 1976 (additional source)
Arcturidae Dana, 1849 (additional source)
Argestidae Por, 1986 (additional source)
Arietellidae Sars G.O., 1902 (additional source)
Ascothoracida (additional source)
Ascothoracidae Grygier, 1987 (additional source)
Asellota (additional source)
Astacidea (additional source)
Atyidae De Haan, 1849 (additional source)
Atyoidea De Haan, 1849 (additional source)
Augaptilidae Sars G.O., 1905 (additional source)
Austrarcturellidae Poore & Bardsley, 1992 (basis of record)
Balanoidea Leach, 1817 (additional source)
Balanomorpha (additional source)
Bathylasmatidae Newman & Ross, 1971 (additional source)
Bathypontiidae Brodsky, 1950 (additional source)
Benthesicymidae Wood-Mason in Wood-Mason & Alcock, 1891 (additional source)
Bodotriidae T. Scott, 1901 (additional source)
Bogidiellidae Hertzog, 1936 (additional source)
Bopyridae Rafinesque, 1815 (additional source)
Bopyroidea Rafinesque, 1815 (basis of record)
Branchiopoda (taxonomy source)
Calanoida (additional source)
Calanticidae Zevina, 1978 (additional source)
Callianassidae Dana, 1852 (additional source)
Campylonotidae Sollaud, 1913 (basis of record)
Campylonotoidea Sollaud, 1913 (additional source)
Candaciidae Giesbrecht, 1892-1893 (additional source)
Canthocamptidae Brady, 1880 (additional source)
Caprellidae Leach, 1814 (additional source)
Caprellidea accepted as Caprelloidea Leach, 1814 (basis of record)
Caridea (additional source)
Ceratocumatidae Calman, 1905 (additional source)
Chaetiliidae Dana, 1849 (additional source)
Chthamaloidea Darwin, 1854 (additional source)
Cirolanidae Dana, 1852 (additional source)
Cirripedia (additional source)
Cladocera accepted as Diplostraca (basis of record)
Cladocopina (basis of record)
Clausidiidae Embleton, 1901 (additional source)
Clausocalanidae Giesbrecht, 1893 (additional source)
Colomastigidae Chevreux, 1899 (additional source)
Coronulidae Leach, 1817 (additional source)
Coronuloidea Leach, 1817 (additional source)
Corophiidae Leach, 1814 (additional source)
Corycaeidae Dana, 1846 (additional source)
Crangonidae Haworth, 1825 (additional source)
Crangonoidea Haworth, 1825 (additional source)
Cressidae Stebbing, 1899 (additional source)
Crinocheta (basis of record)
Cristacoxidae Huys, 1990 (additional source)
Cryptoniscoidea Kossmann, 1880 (basis of record)
Cryptophialidae Gerstaecker, 1866 (additional source)
Ctenosculidae Thiele, 1925 (additional source)
Cumacea (additional source)
Cyclopidae Rafinesque, 1815 (additional source)
Cyclopoida (additional source)
Cylindroleberidoidea Mueller, 1906 (basis of record)
Cylindropsyllidae Sars G.O., 1909 (additional source)
Cyprididae Baird, 1845 (basis of record)
Cypridinidae Baird, 1850 (additional source)
Cypridinoidea Baird, 1850 (basis of record)
Cypridoidea Baird, 1845 (additional source)
Cystisomatidae Willemöes-Suhm, 1875 (additional source)
Cytherellidae Sars, 1866 (additional source)
Cytheridae Baird, 1850 (additional source)
Cytheromatidae Elofson, 1939 (additional source)
Dairellidae Bovallius, 1887 (additional source)
Dajidae G. O. Sars, 1883 (additional source)
Daphniidae Straus, 1820 (basis of record)
Dendrogastrida (additional source)
Dendrogastridae Gruvel, 1905 (additional source)
Dendrotiidae Nordenstam, 1933 accepted as Dendrotionidae Vanhöffen, 1914 (basis of record)
Dexaminidae Leach, 1814 (additional source)
Diaixidae Sars G.O., 1902 (additional source)
Diastylidae Bate, 1856 (additional source)
Diosaccidae Sars G.O., 1906 accepted as Miraciidae Dana, 1846 (additional source)