Abietinaria abietina (Linnaeus, 1758) (additional source)
Acanthocyclops Kiefer, 1927 (basis of record)
Acarosporineae (basis of record)
Actinauge verrilli McMurrich, 1893 accepted as Actinauge verrillii McMurrich, 1893 (additional source)
Actinocyclus C.G. Ehrenberg, 1837 (additional source)
Actinocythereis Puri, 1953 † (basis of record)
Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Actinoptychus undulatus (J.W.Bailey) Ralfs, 1861 accepted as Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Aega psora (Linnaeus, 1758) (additional source)
Aetideus Brady, 1883 (additional source)
Aetideus armatus (Boeck, 1873) (additional source)
Agalmidae Brandt, 1835 accepted as Agalmatidae Brandt, 1835 (basis of record)
Aglenchus Andrássy, 1954 (basis of record)
Agnesiidae Huntsman, 1912 accepted as Agneziidae Monniot C. & Monniot F., 1991 (additional source)
Agropyron repens (L.) P. Beauv. accepted as Elymus repens (L.) Gould (basis of record)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (additional source)
Alethinophidia (basis of record)
Alismatales (basis of record)
Allogaussia Schellenberg, 1926 (additional source)
Allorchestes Dana, 1849 (basis of record)
Alona Baird, 1843 (basis of record)
Alteutha depressa (Baird, 1837) (additional source)
Alteutha oblonga (Goodsir, 1845) (additional source)
Amblystegiaceae (basis of record)
Ampelisca eschrichtii Krøyer, 1842 (additional source)
Amphicteis gunneri (M. Sars, 1835) (additional source)
Amphilochus Spence Bate, 1863 (additional source)
Amphimonhystrella Timm, 1961 (additional source)
Amphitrite Müller, 1771 (additional source)
Amphitrite cirrata Müller, 1776 (additional source)
Amphora ovalis (Kützing) Kützing, 1844 (additional source)
Ampithoe valida S.I. Smith, 1873 (additional source)
Anaitides longipes (Kinberg, 1866) accepted as Phyllodoce longipes Kinberg, 1866 (additional source)
Anasca accepted as Flustrina (additional source)
Ancistrosyllis groenlandica McIntosh, 1878 (additional source)
Andracantha Schmidt, 1975 (basis of record)
Anomopoda (additional source)
Anoplostoma Bütschli, 1874 (additional source)
Anoplura (basis of record)
Antarcturus zur Strassen, 1902 (additional source)
Antatelson J.L. Barnard, 1972 (additional source)
Anthoxanthum L. (basis of record)
Anticoma Bastian, 1865 (additional source)
Aphelenchida accepted as Aphelenchoidea Fuchs, 1937 (basis of record)
Aphelenchoididae Skarbilovich, 1947 (basis of record)
Aphragmophora (basis of record)
Appendicularia (additional source)
Arachnopusiidae Jullien, 1888 (additional source)
Araeolaimus de Man, 1888 (additional source)
Araliaceae (basis of record)
Archaeobalanidae Newman & Ross, 1976 accepted as Archaeobalaninae Newman & Ross, 1976 (additional source)
Archeterokrohnia Casanova, 1986 (additional source)
Arenaria Brisson, 1760 (additional source)
Arenaria interpres (Linnaeus, 1758) (basis of record)
Arhythmacanthidae Yamaguti, 1935 (basis of record)
Aricidea suecica Eliason, 1920 represented as Aricidea (Strelzovia) suecica Eliason, 1920 (additional source)
Aristias Boeck, 1871 (additional source)
Artacama proboscidea Malmgren, 1866 (additional source)
Ascaridida accepted as Ascaridomorpha (basis of record)
Ascarophis van Beneden, 1871 (additional source)
Aspersentinae Golvan, 1960 accepted as Heteracanthocephalinae Petrochenko, 1956 (basis of record)
Aspersentis Van Cleave, 1929 (basis of record)
Asphodelus L. (basis of record)
Asphodelus fistulosus L. (basis of record)
Asterionella A.H. Hassall, 1850 (additional source)
Asterionella formosa Hassall, 1850 (additional source)
Atolla wyvillei Haeckel, 1880 (additional source)
Atrochromadora Wieser, 1959 (additional source)
Attheyaceae Round & R. M. Crawford (basis of record)
Atylus Leach, 1815 (additional source)
Auchenorrhyncha (basis of record)
Aulacoseira ambigua (Grunow) Simonsen, 1979 (additional source)
Aulacoseira distans (Ehrenberg) Simonsen, 1979 † (additional source)
Aulacoseira granulata (Ehrenberg) Simonsen, 1979 (additional source)
Aulacoseiraceae Crawford (basis of record)
Auriculaceae Hendey (basis of record)
Australscalpellum Newman & Ross, 1971 (additional source)
Austronema spirurum Cobb, 1914 (basis of record)
Autarchoglossa (basis of record)
Autolytus Grube, 1850 accepted as Myrianida Milne Edwards, 1845 (additional source)
Avenella (Bluff & Fingerh.) Drejer (basis of record)
Avenella flexuosa (L.) Drejer (basis of record)
Avocettina infans (Günther, 1878) (additional source)
Axonolaimus de Man, 1889 (additional source)
Balaena Linnaeus, 1758 (additional source)
Balaenoptera Lacépède, 1804 (additional source)
Balaenoptera acutorostrata Lacépède, 1804 (additional source)
Balaenoptera borealis Lesson, 1828 (additional source)
Balaenoptera musculus brevicauda Ichihara, 1966 (basis of record)
Balaenoptera physalus (Linnaeus, 1758) (additional source)
Balanus balanoides (Linnaeus, 1767) accepted as Semibalanus balanoides (Linnaeus, 1767) (additional source)
Bartramia longicauda (Bechstein, 1812) (additional source)
Bathypanoploea Schellenberg, 1939 accepted as Alexandrella Chevreux, 1911 (additional source)
Bdelloidea (basis of record)
Bembidion Latreille, 1802 (basis of record)
Bicellariellidae accepted as Bugulidae Gray, 1848 (basis of record)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Boiga Fitzinger, 1826 (basis of record)
Boiga irregularis (Bechstein, 1802) (basis of record)
Bolbosoma Porta, 1908 (basis of record)

Dutch Alaskastrandloper for Calidris mauri (Cabanis, 1857)
Dutch Amerikaanse zee-eend [from synonym] for Melanitta nigra americana (Swainson, 1832)
Dutch Beringstrandloper for Calidris ptilocnemis (Coues, 1873)
Dutch grote kanoetstrandloper for Calidris tenuirostris (Horsfield, 1821)
Dutch kattenstaart for Lythrum salicaria L.
Dutch taigastrandloper for Calidris subminuta (Middendorff, 1853)
Dutch Temmincks strandloper for Calidris temminckii (Leisler, 1812)
Dutch zwanenbloem for Butomus umbellatus L.
English abyssal grenadier for Coryphaenoides armatus (Hector, 1875)
English African softnose stake for Bathyraja smithii (Müller & Henle, 1841)
English Aleutian fringed sculpin for Porocottus mednius (Bean, 1898)
English alligatorfishes for Agonidae Swainson, 1839
English Amazon river dolphin for Inia geoffrensis (de Blainville, 1817)
English Antarctic armless flounder [from synonym] for Mancopsetta maculata antarctica Kotlyar, 1978
English Antarctic escolar for Paradiplospinus antarcticus Andriashev, 1960
English Antarctic jonasfish [from synonym] for Notolepis coatsi Dollo, 1908
English Antarctic silverfish for Pleuragramma antarcticum Boulenger, 1902
English Antarctic spiny plunderfish for Harpagifer antarcticus Nybelin, 1947
English Antarctic starry skate for Amblyraja georgiana (Norman, 1938)
English Antarctic toothfish for Dissostichus mawsoni Norman, 1937
English armless flounder for Neoachiropsetta milfordi (Penrith, 1965)
English Asian clam for Corbicula fluminea (O. F. Müller, 1774)
English Atlantic humpback dolphin for Sousa teuszii (Kükenthal, 1892)
English Atlantic sand crab for Emerita talpoida (Say, 1817)
English Atlantic white-spotted octopus [from synonym] for Octopus macropus Risso, 1826
English Australian sea lion for Neophoca cinerea (Péron, 1816)
English badwater snail [from synonym] for Assiminea infima S. S. Berry, 1947
English baiji for Lipotes vexillifer Miller, 1918
English Baird's beaked whale for Berardius bairdii Stejneger, 1883
English bald notothen for Pagothenia borchgrevinki (Boulenger, 1902)
English Balearic shearwater for Puffinus mauretanicus Lowe, 1921
English baleen whales for Balaenoptera Lacépède, 1804
English bandidos for Agonidae Swainson, 1839
English bandtail notothen for Pagothenia brachysoma (Pappenheim, 1912)
English barratt corbula [from synonym] for Corbula barrattiana C. B. Adams, 1852
English bears for Ursidae Fischer, 1817
English belligerent sculpin for Megalocottus platycephalus (Pallas, 1814)
English bent sea rod [from synonym] for Plexaura flexuosa Lamouroux, 1821
English Bering poacher for Occella dodecaedron (Tilesius, 1813)
English Bering Sea beaked whale for Mesoplodon stejnegeri True, 1885
English bigeye grenadier for Macrourus holotrachys Günther, 1878
English bigeye notothen for Trematomus tokarevi Andriashev, 1978
English black abalone for Haliotis cracherodii Leach, 1814
English black cod for Notothenia microlepidota Hutton, 1875
English black dolphin for Cephalorhynchus eutropia Gray, 1846
English black dragonfish for Idiacanthus atlanticus Brauer, 1906
English black mangrove [from synonym] for Avicennia africana Palisot de Beauvois
English black oreo for Allocyttus niger James, Inada & Nakamura, 1988
English blackfin icefish for Chaenocephalus aceratus (Lönnberg, 1906)
English blackfin notothen for Trematomus scotti (Boulenger, 1907)
English blackline prickleback for Acantholumpenus mackayi (Gilbert, 1896)
English blue mud shrimp for Upogebia pugettensis (Dana, 1852)
English blue rockcod for Notothenia cyanobrancha Richardson, 1844
English blunt scalyhead for Trematomus eulepidotus Regan, 1914
English bogue lanternfish for Symbolophorus boops (Richardson, 1845)
English boreal rosy margarite for Margarites costalis costalis (A. Gould, 1841)
English bottle brush tree for Melaleuca quinquenervia (Cav.) S.T. Blake
English bottlenose dolphins for Tursiops Gervais, 1855
English brightbelly sculpin for Microcottus sellaris (Gilbert, 1896)
English broad cockle for Serripes (Serripes) laperousii (Deshayes, 1839)
English broad smoothcockle for Serripes (Serripes) laperousii (Deshayes, 1839)
English broadleaf rush for Juncus planifolius R.Br.
English bullheads for Cottidae Bonaparte, 1831
English butterfly kingfish for Gasterochisma melampus Richardson, 1845
English calico crayfish [from synonym] for Orconectes immunis (Hagen, 1870)
English California aglaja for Navanax inermis (J. G. Cooper, 1863)
English California seahare for Aplysia californica J. G. Cooper, 1863
English California softshell clam for Cryptomya californica (Conrad, 1837)
English carapine grenadier for Coryphaenoides carapinus Goode & Bean, 1883
English Caribbean glassy-bubble for Atys caribaeus (A. d'Orbigny, 1841)
English Carolinian ghost shrimp for Callichirus major (Say, 1818)
English chaffy sedge for Carex paleacea Schreb. ex Wahlenb.
English Chinese mud shrimp [from synonym] for Upogebia wuhsienweni Yu, 1931
English Chinese mysterysnail for Cipangopaludina chinensis (J. E. Gray, 1833)
English Chinese river dolphin for Lipotes vexillifer Miller, 1918
English cixid planthoppers for Cixiidae Spinola, 1839
English clean glassy-bubble [from synonym] for Atys castus P. P. Carpenter, 1864
English clinging jellyfish for Gonionemus vertens A. Agassiz, 1862
English cod icefish for Patagonotothen ramsayi (Regan, 1913)
English colubrids for Colubridae Oppel, 1811
English common dolphins for Delphinus Linnaeus, 1758
English common Mediterranean grass for Schismus barbatus (Loefl. ex L.) Thellung
English common timothy for Phleum pratense L.
English common water hyacinth for Eichhornia crassipes (Mart.) Solms
English cosmopolitan bulrush [from synonym] for Schoenoplectus maritimus (L.) Lye
English creeping bell hydroid for Calycella syringa (Linnaeus, 1767)
English crested bigscale for Poromitra crassiceps (Günther, 1878)
English cross-barred venus for Chione cancellata (Linnaeus, 1767)
English Crozet scad for Trachurus longimanus (Norman, 1935)
English curly pondweed for Potamogeton crispus L.
English dark toad plunderfish for Pogonophryne fusca Balushkin & Eakin, 1998
English dark-belly skate for Bathyraja meridionalis Stehmann, 1987
English darkfin sculpin for Malacocottus zonurus Bean, 1890
English deepwater arrowtooth eel for Histiobranchus bathybius (Günther, 1877)
English deepwater dragon for Bathydraco marri Norman, 1938
English deepwater notothen for Trematomus loennbergii Regan, 1913
English deep-water spiny plunderfish for Harpagifer spinosus Hureau, Louis, Tomo & Ozouf, 1980
English docked snailfish for Lethotremus muticus Gilbert, 1896
English dogtooth grenadier for Cynomacrurus piriei Dollo, 1909
English double-ended pipefish [from synonym] for Yozia bicoarctata (Bleeker, 1857)