Acartia latisetosa (Krichagin, 1873) accepted as Paracartia latisetosa (Krichagin, 1873) (basis of record)
Acartia lefevreae Bradford, 1976 represented as Acartia (Acartiura) lefevreae Bradford, 1976 (basis of record)
Acartiidae Sars G.O., 1903 (additional source)
Achtheres Nordmann, 1832 (basis of record)
Achtheres percarum Nordmann, 1832 (basis of record)
Advena paradoxa (Beneden, 1851) accepted as Kabatazus paradoxus (van Beneden, 1851) (source of synonymy)
Aegisthus atlanticus Wolfenden, 1902 accepted as Aegisthus mucronatus Giesbrecht, 1891 (basis of record)
Aetideopsis armatus (Boeck, 1872) accepted as Aetideopsis armata (Boeck, 1872) (basis of record)
Agetus flaccus (Giesbrecht, 1891) (source of synonymy)
Agetus limbatus (Brady, 1883) (source of synonymy)
Agetus typicus Krøyer, 1849 (source of synonymy)
Agnathaner Canu, 1892 accepted as Pachypygus Sars G.O., 1921 (basis of record)
Agnathaner Canu, 1892 accepted as Pachypygus Sars G.O., 1921 (source of synonymy)
Agnathaner freemani Hammond, 1968 accepted as Pachypygus freemani (Hammond, 1968) (source of synonymy)
Agnathaner typicus Canu, 1892 accepted as Pachypygus typicus (Canu, 1892) (source of synonymy)
Akessonia Bresciani & Lützen, 1962 (additional source)
Albionella globosa (Leigh-Sharpe, 1918) accepted as Neoalbionella globosa (Leigh-Sharpe, 1918) (source of synonymy)
Alteutha austrina Scott T., 1912 accepted as Alteutha depressa (Baird, 1837) (basis of record)
Alteutha dubia Scott T., 1912 (basis of record)
Amallophora typica Scott T., 1894 accepted as Xanthocalanus typicus (Scott T., 1894) (source of synonymy)
Amallothrix laminata (Farran, 1926) accepted as Pseudoamallothrix laminata (Farran, 1926) (basis of record)
Amallothrix propinqua (Sars G.O., 1920) (basis of record)
Amallothrix valens (Farran, 1926) (basis of record)
Ambunguipes Huys, 1990 (additional source)
Ameira amphibia Brady, 1902 accepted as Nitocra typica Boeck, 1865 represented as Nitocra typica typica Boeck, 1865 (basis of record)
Ameira attenuata Thompson I.C., 1893 accepted as Filexilia attenuata (Thompson I.C., 1893) (basis of record)
Ameira brevipes pestae Petkovski, 1955 accepted as Ameira pestae Petkovski, 1955 accepted as Filexilia pestae (Petkovski, 1955) (basis of record)
Ameira gracile Scott A., 1896 accepted as Ameira gracilis Scott A., 1896 accepted as Sicameira gracilis (Scott A., 1896) (basis of record)
Ameira gracilis Scott A., 1896 accepted as Sicameira gracilis (Scott A., 1896) (basis of record)
Ameira leptoderma (Klie, 1950) accepted as Sicameira leptoderma Klie, 1950 (basis of record)
Ameira pestae Petkovski, 1955 accepted as Filexilia pestae (Petkovski, 1955) (basis of record)
Ameiropsis abbreviata Sars G.O., 1911 accepted as Biameiropsis abbreviata (Sars G.O., 1911) (source of synonymy)
Amonardia Lang, 1944 (additional source)
Amonardia forficula (Claus, 1863) (basis of record)
Amonardia littoralis (Sars G.O., 1911) accepted as Parastenhelia littoralis (Sars G.O., 1911) accepted as Microthalestris littoralis Sars G. O., 1911 (basis of record)
Amphiascoides Nicholls, 1941 (additional source)
Amphiascoides neglectus (Norman & Scott T., 1905) (basis of record)
Amphiascopsis Gurney, 1927 (additional source)
Amphiascopsis hirtus (Gurney, 1927) accepted as Sarsamphiascus hirtus (Gurney, 1927) (basis of record)
Amphiascopsis minutus (Claus, 1863) accepted as Amphiascus minutus (Claus, 1863) accepted as Sarsamphiascus minutus (Claus, 1863) (basis of record)
Amphiascopsis obscurus (Sars G.O., 1906) accepted as Amphiascopsis cinctus (Claus, 1866) (basis of record)
Amphiascus Sars G.O., 1905 (additional source)
Amphiascus giesbrechti Sars G.O., 1906 (basis of record)
Amphiascus longirostris (Claus, 1863) accepted as Paramphiascopsis longirostris (Claus, 1863) (basis of record)
Amphiascus normani Sars G.O., 1911 accepted as Mesamphiascus normani (Sars G.O., 1911) accepted as Bulbamphiascus imus (Brady, 1872) (basis of record)
Amphiascus parvulus (Claus, 1866) (basis of record)
Amphiascus scotti Sewell, 1924 accepted as Robertsonia propinqua (Scott T., 1894) (basis of record)
Amphiascus thalestroides Sars G.O., 1911 (basis of record)
Anchistrotos Brian, 1906 (additional source)
Anchistrotos laqueus Leigh-Sharpe, 1935 (basis of record)
Anomalocera patersonii Templeton, 1837 (basis of record)
Aphanodomus Wilson C.B., 1924 (additional source)
Apodomyzon Stock, 1970 (additional source)
Apodopsyllus madrasensis (Krishnaswamy, 1951) (basis of record)
Apodopsyllus perplexus (Wells, 1963) (basis of record)
Apodopsyllus reductus (Petkovski, 1955) accepted as Apodopsyllus perplexus (Wells, 1963) (basis of record)
Archisenia Huys & Gee, 1993 (additional source)
Arenopontia subterranea Kunz, 1937 (basis of record)
Arenopontiidae Martínez Arbizu & Moura, 1994 (additional source)
Arenosetella monensis Moore, 1976 accepted as Arenosetella tenuissima (Klie, 1929) (basis of record)
Arenosetella palpilabra (Nicholls, 1935) accepted as Arenosetella tenuissima (Klie, 1929) (basis of record)
Argestigens uniremis Willey, 1935 (basis of record)
Argulus Müller O.F., 1785 (additional source)
Arietellidae Sars G.O., 1902 (additional source)
Artotrogus lilljeborgii (Boeck, 1859) accepted as Asterocheres lilljeborgi Boeck, 1859 (basis of record)
Ascidicolidae Thorell, 1859 (additional source)
Astericola clausii Rosoll, 1888 (basis of record)
Asterocheres asterocheres (Sars G.O., 1915) accepted as Asterocheres lilljeborgi Boeck, 1859 (basis of record)
Asterocheres boeckii (Brady, 1880) (basis of record)
Asterocheres simulans (Scott T., 1898) (basis of record)
Asterocheres thorelli (Sars G.O., 1879) accepted as Dermatomyzon nigripes (Brady & Robertson, 1880) represented as Dermatomyzon nigripes nigripes (Brady & Robertson, 1876) (basis of record)
Axinophilus Bresciani & Ockelmann, 1966 (additional source)
Bathycamptus Huys & Thistle, 1989 (source of synonymy)
Bathycamptus minutus (Wells, 1965) (source of synonymy)
Beatricella aemula (Scott T., 1893) (basis of record)
Biameiropsis Karanovic, 2006 (basis of record)
Biameiropsis abbreviata (Sars G.O., 1911) (basis of record)
Botryllophilus Hesse, 1864 (additional source)
Brachiella obesa (Krøyer, 1837) accepted as Parabrachiella bispinosa (Nordmann, 1832) (basis of record)
Bradya armifera (Scott T. & Scott A., 1896) (basis of record)
Bradya congenera Sars G.O., 1920 (basis of record)
Bradya dilatata Sars G.O., 1904 accepted as Parabradya dilatata (Sars G.O., 1904) (basis of record)
Bradya furcata Sars G.O., 1920 (basis of record)
Bradya macrochaeta Sars G.O., 1920 (basis of record)
Bradya proxima Scott T., 1912 (basis of record)
Bradya scotti Sars G.O., 1920 (basis of record)
Bradya simulans Sars G.O., 1920 (basis of record)
Bradya typica Boeck, 1873 (basis of record)
Bryaxis Sars G.O., 1901 accepted as Bryaxona Strand, 1929 accepted as Comantenna Wilson C.B., 1924 (source of synonymy)
Bryaxis minor Farran, 1905 accepted as Paracomantenna minor (Farran, 1905) (source of synonymy)
Bryaxona Strand, 1929 accepted as Comantenna Wilson C.B., 1924 (basis of record)
Bryaxona Strand, 1929 accepted as Comantenna Wilson C.B., 1924 (source of synonymy)
Bulbamphiascus Lang, 1944 (additional source)
Buproridae Thorell, 1859 (additional source)
Calanoides brevicornis (Lubbock, 1856) (basis of record)
Calanus brevicornis Lubbock, 1856 accepted as Calanoides brevicornis (Lubbock, 1856) (basis of record)
Caligidae Burmeister, 1835 (additional source)
Caligus brevipedis Bassett-Smith, 1896 (basis of record)
Caligus gurnardi Krøyer, 1863 (basis of record)
Calocalanidae Bernard, 1958 accepted as Paracalanidae Giesbrecht, 1893 (additional source)