Acaciothrips Priesner, 1968 accepted as Acaciothrips Priesner, 1965 (source of synonymy)
Acanthocephalus opsariichthys Yamaguti, 1935 accepted as Acanthocephalus opsariichthydis Yamaguti, 1935 (source of synonymy)
Acindrocephalus Keith & Delpont, 2004 accepted as Dicronocephalus Hope, 1837 (source of synonymy)
Acmeodor Matthew & Granger, 1921 † accepted as Acmeodon Matthew & Granger, 1921 † (source of synonymy)
Acrasiaceae accepted as Acrasidae (source of synonymy)
Acrolepidae Aldinger, 1937 † accepted as Acrolepididae Aldinger, 1937 † (source of synonymy)
Actinophyridae accepted as Actinophryidae (source of synonymy)
Actinoptilon Kükenthal, 1910 accepted as Actinoptilum Kükenthal, 1911 (source of synonymy)
Aculeisporites † accepted as Aculeispores S. Artüz, 1957 † (source of synonymy)
Aenicteguidae Kethley, 1977 accepted as Aenictequidae (source of synonymy)
Aeschnidae accepted as Aeshnidae Leach, 1815 (source of synonymy)
Agamonematoideum Diesing, 1853 accepted as Agamonematodum Diesing, 1861 (source of synonymy)
Akbuluta H. Özdikmen, 2009 † accepted as Hannaites Mandra, 1969 † (source of synonymy)
Aleyrodes Latreille, 1807 accepted as Aleyrodes Latreille, 1796 (source of synonymy)
Allassodesmus Chamberlin, 1923 accepted as Alassodesmus Chamberlin, 1923 (source of synonymy)
Alphus Thomson, 1860 accepted as Alphus White, 1855 (source of synonymy)
Alphus Dejean, 1833 accepted as Alphus White, 1855 (source of synonymy)
Amphibiophilidae Durette-Desset & Chabaud, 1981 accepted as Trichostrongylidae Leiper, 1908 (source of synonymy)
Amphitrematidae Poche, 1913 accepted as Amphitremidae Poche, 1913 (source of synonymy)
Amycterus Schönherr, 1826 accepted as Amycterus Schönherr, 1823 (source of synonymy)
Anabaenaceae accepted as Nostocaceae Eichler, 1886 (source of synonymy)
Anaplasmaceae accepted as Anaplasmataceae Philip, 1957 (Approved Lists, 1980) emend. Dumler et al., 2001 (source of synonymy)
Anatrichus LeConte accepted as Anatrichis LeConte, 1854 (source of synonymy)
Ancylostomidae accepted as Ancylostomatidae Looss, 1905 (source of synonymy)
Andriphiloscia pedisetosa Taiti & Humphreys, 2001 accepted as Andricophiloscia pedisetosa Taiti & Humphreys, 2001 (source of synonymy)
Andriphiloscia stepheni (Nicholls & Barnes, 1926) accepted as Andricophiloscia stepheni (Nicholls & Barnes, 1927) (source of synonymy)
Angiostrongylidae Böhm & Gebauer, 1934 accepted as Metastrongylidae Leiper, 1908 (source of synonymy)
Anisitsellides Lundblad, 1941 accepted as Anisitsiellides Lundblad, 1941 (source of synonymy)
Anomalocaridae † accepted as Anomalocarididae † (source of synonymy)
Anthroposthiidae accepted as Antroposthiidae Faubel, 1976 (source of synonymy)
Antroposthidae accepted as Antroposthiidae Faubel, 1976 (source of synonymy)
Aplosporidium Caullery & Mesnil, 1899 accepted as Haplosporidium Caullery & Mesnil, 1899 (source of synonymy)
Apodinidae accepted as Apodiniaceae (source of synonymy)
Araeolaimidae De Coninck, 1965 accepted as Diplopeltidae Filipjev, 1918 (source of synonymy)
Archaeaspidae Repina, 1979 † accepted as Archaeaspididae Repina, 1979 † (source of synonymy)
Archaeomenidae Goodrich, 1909 † accepted as Archaeomaenidae † (source of synonymy)
Archaesphaerodiniopsidaceae accepted as Archaeosphaerodiniopsidaceae (source of synonymy)
Armeniobrachiulus Lohmander, 1936 accepted as Armeniobrachyiulus Lohmander, 1936 (source of synonymy)
Artemidae accepted as Artemiidae (source of synonymy)
Asconema Schmidt, 1880 accepted as Asconema Kent, 1870 (source of synonymy)
Ascoseriaceae accepted as Ascoseiraceae Skottsberg, 1907 (source of synonymy)
Askaridae Schneidemuehl, 1896 accepted as Ascarididae Baird, 1853 (source of synonymy)
Askonema Kent, 1870 accepted as Asconema Kent, 1870 (source of synonymy)
Bacteriodes accepted as Bacteroides Castellani & Chalmers, 1919 (Approved Lists, 1980) emend. Shah & Collins, 1989 (source of synonymy)
Baileyella Özdikmen, 2009 † accepted as Durotrigia D. Bailey, 1987 † (source of synonymy)
Baserus Özdikmen, 2009 † accepted as Suessia S.J. Morbey, 1975 † (source of synonymy)
Batidea (B.C.J. Dumortier) E.L. Greene, 1906 accepted as Batidaea E.L. Greene, 1906 accepted as Rubus Linnaeus, 1753 (source of synonymy)
Bazarella Vaillant, 1983 accepted as Bazarella Vaillant, 1961 (source of synonymy)
Belosepiidae Naef, 1921 † accepted as Belosaepiidae Dixon, 1850 † (source of synonymy)
Belowius Özdikmen, 2009 † accepted as Wanneria R. Below, 1987 † (source of synonymy)
Bisnius Leach, 1832 accepted as Bisnius Stephens, 1829 (source of synonymy)
Blastodinidae accepted as Blastodiniaceae (source of synonymy)
Bolyeridae accepted as Bolyeriidae (source of synonymy)
Bouletiellidae accepted as Bourletiellidae (source of synonymy)
Brachyionichthyidae accepted as Brachionichthyidae (source of synonymy)
Bronnimannidae Loeblich & Tappan, 1984 accepted as Bronnimanniidae (source of synonymy)
Butschiellaceae accepted as Butschliellaceae (source of synonymy)
Callorhynchidae Garman, 1901 accepted as Callorhinchidae Garman, 1901 (source of synonymy)
Calyptosporiidae accepted as Calyptosporidae Overstreet, Hawkins & Fournie, 1984 (source of synonymy)
Carapodidae accepted as Carapidae (source of synonymy)
Carciniphoridae accepted as Carcinophoridae (source of synonymy)
Castanedia accepted as Castenedia R.M. King & H. Robinson, 1978 (source of synonymy)
Centritactaceae accepted as Centritractaceae (source of synonymy)
Cephalaspidoformes accepted as Cephalaspidiformes † (source of synonymy)
Chamberlainia A.E. Artabe, A.B. Zamuner & D.W. Stevenson, 2005 accepted as Neochamberlainia A.E. Artabe, A.B. Zamuner & D.W. Stevenson, 2010 † (source of synonymy)
Channa Gronow, 1763 accepted as Channa Scopoli, 1777 (source of synonymy)
Cheilohorneropsidae Annoscia, Braga & Finotti, 1984 † accepted as Cheilhorneropsidae Annoscia, Braga & Finotti, 1984 † (source of synonymy)
Cheirolepidae Pander, 1860 † accepted as Cheirolepididae Pander, 1860 † (source of synonymy)
Chelignathus kochii Menge, 1854 † accepted as Chelignathus kochi Menge in Koch & Berendt, 1854 † (source of synonymy)
Chiastocella accepted as Chiastosella Canu & Bassler in Bassler, 1934 (source of synonymy)
Chileana Özdikmen, 2009 accepted as Cesachile Koçak, 2008 (source of synonymy)
Chlorobothryaceae accepted as Chlorobotryaceae (source of synonymy)
Chloropthalmidae accepted as Chlorophthalmidae (source of synonymy)
Chondronematidae accepted as Capillariidae Railliet, 1915 (source of synonymy)
Chrysidae accepted as Chrysididae (source of synonymy)
Cicadoidae accepted as Cicadidae Leach, 1815 (source of synonymy)
Cinnamonum accepted as Cinnamomum Schaeffer, 1760 (source of synonymy)
Cladopyxiaceae accepted as Cladopyxidaceae Kofoid, 1907 (source of synonymy)
Clathria transieus (Hallman, 1912) accepted as Clathria transiens Hallmann, 1912 (source of synonymy)
Cleithrolepidae † accepted as Cleithrolepididae † (source of synonymy)
Clibanarius longistarus (De Haan, 1849) accepted as Clibanarius longitarsus (De Haan, 1849) (source of synonymy)
Clitambonitididae Winchell & Schuchert, 1893 † accepted as Clitambonitidae Winchell & Schuchert, 1893 † (source of synonymy)
Cobitididae accepted as Cobitidae (source of synonymy)
Coccidia accepted as Eimeria Schneider, 1875 (source of synonymy)
Coccolepidae Berg, 1940 † accepted as Coccolepididae Berg, 1940 † (source of synonymy)
Codonellopsis Kofoid & Campbell, 1939 accepted as Codonellopsis Jörgensen, 1924 (source of synonymy)
Coelacanthiidae † accepted as Coelacanthidae Agassiz, 1844 † (source of synonymy)
Coelosomidae accepted as Coelosomididae (source of synonymy)
Coenoloba accepted as Cenoloba Walsingham, 1885 (source of synonymy)
Colpodidiidae accepted as Colpodidae (source of synonymy)
Comephorenema johnsoni (Arya, 1979) accepted as Comephoronema johnsoni Arya, 1979 (additional source)
Comephorenema mackiewiczi (Malhotra & Rautela, 1985) accepted as Comephoronema mackiewiczi Malhotra & Rautela, 1985 (source of synonymy)
Comephorenema oschmarini (Trofimenko, 1974) accepted as Comephoronema oschmarini Trofimenko, 1974 (source of synonymy)
Comephorenema trichiae (Arya, 1991) accepted as Comephoronema trichiae Arya, 1991 (source of synonymy)
Comephorenema werestchagini (Layman, 1933) accepted as Comephoronema werestchagini Layman, 1933 (source of synonymy)
Conacontidae accepted as Conaconidae Schewiakoff, 1926 (source of synonymy)
Cooperiidae Skrjabin & Schulz, 1937 accepted as Trichostrongylidae Leiper, 1908 (source of synonymy)
Corothamus C. Presl, 1844 accepted as Corothamnus (W.D.J. Koch) K.B. Presl, 1845 (source of synonymy)
Corynophaeaceae accepted as Corynophlaeaceae (source of synonymy)
Cosmarium protuberans P. Lundell, 1871 accepted as Cosmarium protruberans P. Lundell, 1871 (source of synonymy)

 Descriptive info

 for Mauicetus Benham, 1939 †

Marine, fossil: Tertiary (Sepkoski 2002) (as Manicetus [misspelling]) [details]

 Descriptive info

 for Schackoinidae Pokorny, 1958 †

Misspelled Shackoinidae in Benton, 1993. Benton, 1993 habitat flag(s): M; stratigraphic range: Cretaceous ... [details]

 Nomenclatural status

 for Aculeisporites †

orthographia [details]

 Nomenclatural status

 for Ianirella fusiformis

orthographia [details]

 Nomenclatural status

 for Ianirella hirsuta

orthographia [details]

 Nomenclatural status

 for Ichthyoxenus Zimmer in Krumbach & Kükenthal, 1927

later usage [details]

 Nomenclatural status

 for Ichthyoxenus auctt.

orthographia [details]

 Nomenclatural status

 for Megabalanus Zullo, 1967

later usage [details]

 Nomenclatural status

 for Notobalanus Zullo, 1967

Unavailable (name published in thesis only) [details]

 Nomenclatural status

 for Shackoinidae Pokorny, 1958 †

orthographia [details]

 Nomenclatural status

 for Symphella

orthographia [details]

 Nomenclature

 for Planktonema

Misspelling, as found in some ecological literature. [details]

 Subfamily

 for Pauropoposis Remy, 1941

Apparent misspelling in Nomenclator Zoologicus. [details]

 Taxonomic remark

 for Aculeisporites †

Genus spelling used in literature e.g. A. rosenbergii Horowitz, 1973 (sp. nov.), "A." variabilis Jansonius, however ... [details]

 Taxonomic remark

 for Allassodesmus Chamberlin, 1923

Apparent misspelling in Nomenclator Zoologicus. [details]

 Taxonomic remark

 for Armeniobrachiulus Lohmander, 1936

Apparent misspelling in Nomenclator Zoologicus. [details]

 Taxonomic remark

 for Gesothrix Chamberlin, 1923

Apparent error in Nomenclator Zoologicus (second entry also exists, with correct spelling). [details]

 Taxonomic remark

 for Lanterna Haeckel, 1887

Error in Nomencator Zoologicus: the name "Lanterna" does not appear as a new genus on the page cited by Nomenclator ... [details]

 Taxonomic remark

 for Ormithoëides Verhoeff, 1941

Apparent misspelling in Nomenclator Zoologicus. [details]

 Taxonomic remark

 for Saccammina Brady, 1871

Listed as valid publication in Nomenclator Zoologicus cf. Saccammina Sars, 1869, listed as nomen nudum, however ... [details]

 Taxonomic remark

 for Toxacanthus

Interpreted as a misspelling of Toxanthes on the basis of its included species in the Global Compositae Database, ... [details]