Abdia Barnard & Karaman, 1987 (habitat flag source)
Aberratylus Bousfield & Kendall, 1994 (extant flag source)
Aberratylus Bousfield & Kendall, 1994 (habitat flag source)
Abludomelita Karaman, 1981 (habitat flag source)
Abludomelita Karaman, 1981 (extant flag source)
Aborolobatea Ledoyer, 1984 (habitat flag source)
Abyssicaprella McCain, 1966 (extant flag source)
Abyssicaprella McCain, 1966 (current name source)
Abyssicaprella McCain, 1966 (basis of record)
Abyssicaprella McCain, 1966 (habitat flag source)
Abyssogammarus Sowinsky, 1915 (extant flag source)
Abyssogammarus Sowinsky, 1915 (habitat flag source)
Abyssogammarus Sowinsky, 1915 (basis of record)
Abyssogammarus Sowinsky, 1915 (current name source)
Abyssorchomene De Broyer, 1984 (habitat flag source)
Abyssorchomene De Broyer, 1984 (extant flag source)
Acanthogammaridae Garjajewia, 1901 (current name source)
Acanthogammarus Stebbing, 1899 (habitat flag source)
Acanthogammarus Stebbing, 1899 (extant flag source)
Acanthogrubia Stout, 1912 accepted as Cymadusa Savigny, 1816 (habitat flag source)
Acanthogrubia Stout, 1912 accepted as Cymadusa Savigny, 1816 (extant flag source)
Acanthohaustorius Bousfield, 1965 (habitat flag source)
Acanthonotozoma Boeck, 1876 (habitat flag source)
Acanthonotozoma Boeck, 1876 (extant flag source)
Acanthonotozomatidae Stebbing, 1906 (source of synonymy)
Acanthonotozomella Schellenberg, 1926 (habitat flag source)
Acanthonotozomoides Schellenberg, 1931 (habitat flag source)
Acanthonotozomopsis Watling & Holman, 1980 (habitat flag source)
Acanthonotozomopsis Watling & Holman, 1980 (extant flag source)
Acanthoscina Vosseler, 1900 (habitat flag source)
Acanthostepheia Boeck, 1871 (habitat flag source)
Accedomoera J.L. Barnard, 1964 (habitat flag source)
Accubogammarus G. Karaman, 1974 (habitat flag source)
Aceroides Sars, 1895 (habitat flag source)
Acheronia Lowry, 1984 (habitat flag source)
Aciconula Mayer, 1903 (basis of record)
Aciconula Mayer, 1903 (extant flag source)
Aciconula Mayer, 1903 (habitat flag source)
Acidostoma Lilljeborg, 1865 (habitat flag source)
Acontiostoma Stebbing, 1888 (habitat flag source)
Actinacanthus Stebbing, 1888 (habitat flag source)
Actogidiella Stock, 1981 (extant flag source)
Actogidiella Stock, 1981 (habitat flag source)
Acuminodeutopus J.L. Barnard & Reish, 1959 (habitat flag source)
Acuminodeutopus J.L. Barnard & Reish, 1959 (basis of record)
Acuminodeutopus J.L. Barnard & Reish, 1959 (extant flag source)
Adeliella Nicholls, 1938 (habitat flag source)
Aeginella Boeck, 1861 (habitat flag source)
Aeginella Boeck, 1861 (extant flag source)
Aeginella Boeck, 1861 (basis of record)
Aeginellidae Leach, 1814 accepted as Caprellidae Leach, 1814 (source of synonymy)
Aeginellopsis Arimoto, 1970 (basis of record)
Aeginellopsis Arimoto, 1970 (current name source)
Aeginellopsis Arimoto, 1970 (habitat flag source)
Aeginellopsis Arimoto, 1970 (extant flag source)
Aeginina Norman, 1905 (habitat flag source)
Aeginina Norman, 1905 (extant flag source)
Aeginina Norman, 1905 (basis of record)
Aeginoides Schellenberg, 1926 (habitat flag source)
Aeginoides Schellenberg, 1926 (extant flag source)
Aeginoides Schellenberg, 1926 (basis of record)
Aequigidiella Botosaneanu & Stock, 1989 (extant flag source)
Aequigidiella Botosaneanu & Stock, 1989 (habitat flag source)
Aetiopedes Moore & Myers, 1988 (basis of record)
Aetiopedes Moore & Myers, 1988 (habitat flag source)
Aetiopedes Moore & Myers, 1988 (extant flag source)
Aetiopedesidae Myers & Lowry, 2003 (current name source)
Africoecetes Just, 1983 (habitat flag source)
Africoecetes Just, 1983 (extant flag source)
Afridiella Karaman & Barnard, 1979 (extant flag source)
Afridiella Karaman & Barnard, 1979 (habitat flag source)
Afrocrangonyx G. Karaman, 1981 accepted as Metacrangonyx Chevreux, 1909 (habitat flag source)
Afrocrangonyx G. Karaman, 1981 accepted as Metacrangonyx Chevreux, 1909 (basis of record)
Afrocrangonyx G. Karaman, 1981 accepted as Metacrangonyx Chevreux, 1909 (extant flag source)
Afrogitanopsis G. Karaman, 1980 (habitat flag source)
Agilestia Friend, 1982 (habitat flag source)
Agilestia Friend, 1982 (extant flag source)
Akerogammarus Derzhavin & Pjatakova, 1967 (extant flag source)
Akerogammarus Derzhavin & Pjatakova, 1967 (habitat flag source)
Albanogammarus Ruffo, 1995 (habitat flag source)
Albanogammarus Ruffo, 1995 (extant flag source)
Alexandrella Chevreux, 1911 (habitat flag source)
Alicella Chevreux, 1899 (habitat flag source)
Allocrangonyctidae Holsinger, 1989 (current name source)
Allocrangonyx Schellenberg, 1936 (habitat flag source)
Allocrangonyx Schellenberg, 1936 (basis of record)
Allocrangonyx Schellenberg, 1936 (extant flag source)
Allogaussia Schellenberg, 1926 (habitat flag source)
Allomelita Stock, 1984 (extant flag source)
Allomelita Stock, 1984 (habitat flag source)
Allorchestes Dana, 1849 (habitat flag source)
Allorchestes Dana, 1849 (extant flag source)
Alloweckelia Holsinger & Peck, 1968 (habitat flag source)
Alloweckelia Holsinger & Peck, 1968 (extant flag source)
Aloiloi J.L. Barnard, 1970 (extant flag source)
Aloiloi J.L. Barnard, 1970 (habitat flag source)
Aloiloi J.L. Barnard, 1970 (basis of record)
Alsacomelita G. Karaman, 1984 † (habitat flag source)
Alsacomelita G. Karaman, 1984 † (extant flag source)
Amaryllididae Lowry & Stoddart, 2002 (current name source)