Acartiidae Sars G.O., 1903 (additional source)
Acrothoracica (additional source)
Adenopleurellidae Huys, 1990 (additional source)
Aegisthidae Giesbrecht, 1893 (additional source)
Aetideidae Giesbrecht, 1892-1893 (additional source)
Akentrogonida accepted as Rhizocephala (basis of record)
Albuneidae Stimpson, 1858 (additional source)
Alpheidae Rafinesque, 1815 (additional source)
Alpheoidea Rafinesque, 1815 (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)
Anelasmatidae Gruvel, 1905 accepted as Pollicipedidae Leach, 1817 (additional source)
Anomura (additional source)
Anostraca (basis of record)
Antheacheridae Sars M., 1870 (additional source)
Anthessiidae Humes, 1986 (additional source)
Anthuridae Leach, 1814 (additional source)
Anthuridea accepted as Anthuroidea Leach, 1814 (additional source)
Aoridae Stebbing, 1899 (additional source)
Apygophora accepted as Lithoglyptida (additional source)
Archaeobalanidae Newman & Ross, 1976 accepted as Archaeobalaninae Newman & Ross, 1976 (additional source)
Arcturidae Dana, 1849 (additional source)
Argestidae Por, 1986 (additional source)
Argulidae Leach, 1819 (additional source)
Arguloidea Yamaguti, 1963 (additional source)
Arietellidae Sars G.O., 1902 (additional source)
Armadillidiidae Brandt, 1833 (additional source)
Armadilloidea Brandt in Brandt & Ratzeburg, 1831 accepted as Armadillidae Brandt in Brandt & Ratzeburg, 1831 (basis of record)
Artotrogidae Brady, 1880 (additional source)
Ascidicolidae Thorell, 1859 (additional source)
Aselloidea Latreille, 1802 (basis of record)
Asellota (additional source)
Astacidea (additional source)
Asterocheridae Giesbrecht, 1899 (additional source)
Atelecyclidae Ortmann, 1893 (additional source)
Atyidae De Haan, 1849 (additional source)
Atyoidea De Haan, 1849 (additional source)
Augaptilidae Sars G.O., 1905 (additional source)
Axiidae Huxley, 1879 (additional source)
Balaenophilidae Sars G.O., 1910 (additional source)
Balanoidea Leach, 1817 (additional source)
Balanomorpha (additional source)
Bathylasmatidae Newman & Ross, 1971 (additional source)
Bathypontiidae Brodsky, 1950 (additional source)
Bodotriidae T. Scott, 1901 (additional source)
Bomolochidae Claus, 1875 (additional source)
Bopyridae Rafinesque, 1815 (additional source)
Bopyroidea Rafinesque, 1815 (basis of record)
Branchiopoda (taxonomy source)
Branchiura (additional source)
Bresiliidae Calman, 1896 (additional source)
Bresilioidea Calman, 1896 (additional source)
Buproridae Thorell, 1859 (additional source)
Calanoida (additional source)
Calanticidae Zevina, 1978 (additional source)
Caligidae Burmeister, 1835 (additional source)
Callianassidae Dana, 1852 (additional source)
Cancerillidae Giesbrecht, 1897 (additional source)
Cancroidea Latreille, 1802 (additional source)
Candaciidae Giesbrecht, 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)
Catiniidae Bocquet & Stock, 1957 (additional source)
Cecropidae Dana, 1852-1853 accepted as Pandaridae Milne Edwards, 1840 (additional source)
Cerviniidae Sars G.O., 1903 accepted as Aegisthidae Giesbrecht, 1893 (additional source)
Chaetiliidae Dana, 1849 (additional source)
Chelonibiidae Pilsbry, 1916 (additional source)
Cheluridae Allman, 1847 (additional source)
Chirostylidae Ortmann, 1892 (additional source)
Chondracanthidae Milne Edwards, 1840 (additional source)
Chordeumiidae Boxshall, 1988 (additional source)
Chthamalidae Darwin, 1854 (additional source)
Chthamaloidea Darwin, 1854 (additional source)
Chthamalophilidae Bocquet-Védrine, 1961 (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)
Clausiidae Giesbrecht, 1895 (additional source)
Clausocalanidae Giesbrecht, 1893 (additional source)
Clistosaccidae Boschma, 1928 (additional source)
Clytemnestridae Scott A., 1909 accepted as Clytemnestrinae Scott A., 1909 (additional source)
Colomastigidae Chevreux, 1899 (additional source)
Coronulidae Leach, 1817 (additional source)
Coronuloidea Leach, 1817 (additional source)
Corophiidae Leach, 1814 (additional source)
Corycaeidae Dana, 1852-1853 (additional source)
Corystidae Samouelle, 1819 (additional source)
Crangonidae Haworth, 1825 (additional source)
Crangonoidea Haworth, 1825 (additional source)
Cressidae Stebbing, 1899 (additional source)
Crinocheta (basis of record)