• "Lower Heterobranchia"
• [non-Uristidae] (temporary name)
• [non-Uristidae] natalensis K.H. Barnard, 1916
• [unassigned] Buccinidae (temporary name)
• [unassigned] Buccinoidea (temporary name)
• [unassigned] Caenogastropoda (temporary name)
• [unassigned] Cardiidae (temporary name)
• [unassigned] Cephalaspidea (temporary name)
• [unassigned] Cladobranchia (temporary name)
• [unassigned] Conoidea (temporary name)
• [unassigned] Decapodiformes (temporary name)
• [unassigned] Enteropneusta (temporary name)
• [unassigned] Euheterodonta (temporary name)
• [unassigned] Euthyneura (temporary name)
• [unassigned] Helicina (temporary name)
• [unassigned] Heterobranchia (temporary name)
• [unassigned] Lucinidae (temporary name)
• [unassigned] Marginellidae (temporary name)
• [unassigned] Mitridae (temporary name)
• [unassigned] Nassariidae (temporary name)
• [unassigned] Naticidae (temporary name)
• [unassigned] Neogastropoda (temporary name)
• [unassigned] Oegopsida (temporary name)
• [unassigned] Seguenzioidea (temporary name)
• [unassigned] Stylommatophora (temporary name)
• [unassigned] Trochidae (temporary name)
• [unassigned] Trochoidea (temporary name)
• [unassigned] Vetigastropoda (temporary name)
• [unassigned] Mytilidae (temporary name)
• [unassigned] Pectinidae (temporary name)
• “Montereina” sensu Dayrat, 2010 (unaccepted > unavailable name)
• “Montereina” coerulescens (Bergh, 1888) represented as Discodoris coerulescens Bergh, 1888
• “Montereina” concinna (Alder & Hancock, 1864) represented as Discodoris concinna (Alder & Hancock, 1864)
• Aaptos Gray, 1867
• Aaptos aaptos (Schmidt, 1864)
• Aaptos alphiensis Samaai & Gibbons, 2005
• Aaptos chromis de Laubenfels, 1954 accepted as Aaptos suberitoides (Brøndsted, 1934)
• Aaptos nuda (Kirkpatrick, 1903)
• Aaptos papillata (Keller, 1880)
• Aaptos suberitoides (Brøndsted, 1934)
• Abalistes Jordan & Seale, 1906
• Abalistes stellaris (Bloch & Schneider, 1801) accepted as Abalistes stellatus (Anonymous, 1798)
• Abalistes stellatus (Anonymous, 1798)
• Abantennarius Schultz, 1957 accepted as Antennarius Daudin, 1816
• Abantennarius coccineus (Lesson, 1831)
• Abantennarius dorehensis (Bleeker, 1859)
• Abantennarius nummifer (Cuvier, 1817)
• Abarenicola Wells, 1959
• Abarenicola affinis (Ashworth, 1903)
• Abarenicola affinis affinis (Ashworth, 1902) represented as Abarenicola affinis (Ashworth, 1903)
• Abarenicola affinis africana Wells, 1963
• Abarenicola gilchristi Wells, 1963
• Abdopus Norman & Finn, 2001
• Abdopus horridus (d'Orbigny, 1826)
• Aberrantospermata Jondelius, Wallberg, Hooge & Raikova, 2011
• Abietinaria Kirchenpauer, 1884
• Abietinaria laevimarginata (Ritchie, 1907)
• Ablabys Kaup, 1873
• Ablabys binotatus (Peters, 1855)
• Ablabys taenianotus (Cuvier, 1829)
• Ablennes Jordan & Fordice, 1887
• Ablennes hians (Valenciennes, 1846)
• Ablepharus Fitzinger, 1823
• Abludomelita Karaman, 1981
• Abludomelita machaera (K.H. Barnard, 1955)
• Abludomelita mucronata (Griffiths, 1975)
• Abra Lamarck, 1818
• Abra alba (W. Wood, 1802)
• Abra lactea (Dunker, 1861) accepted as Iacra seychellarum (A. Adams, 1856)
• Abra longicallus (Scacchi, 1835)
• Abra nitida (O. F. Müller, 1776)
• Abra ovata (R. A. Philippi, 1836) accepted as Abra segmentum (Récluz, 1843)
• Abra petiti (Dautzenberg, 1923) accepted as Iacra petiti Dautzenberg, 1923
• Abra prismatica (Montagu, 1808)
• Abra segmentum (Récluz, 1843)
• Abra seurati (E. Lamy, 1906)
• Abra tenuis (Montagu, 1803)
• Abralia Gray, 1849
• Abralia (Asteroteuthis) Pfeffer, 1908 represented as Abralia Gray, 1849
• Abralia (Asteroteuthis) veranyi Rüppell, 1844 represented as Abralia veranyi (Rüppell, 1844)
• Abralia veranyi (Rüppell, 1844)
• Abraliopsis Joubin, 1896
• Abraliopsis (Abraliopsis) Joubin, 1896 represented as Abraliopsis Joubin, 1896
• Abraliopsis (Abraliopsis) morisii (Verany, 1839) represented as Abraliopsis morisii (Vérany, 1839)
• Abraliopsis (Micrabralia) Pfeffer, 1900 represented as Abraliopsis Joubin, 1896
• Abraliopsis (Micrabralia) gilchristi (G. C. Robson, 1924) represented as Abraliopsis gilchristi (G. C. Robson, 1924)
• Abraliopsis gilchristi (G. C. Robson, 1924)
• Abraliopsis morisii (Vérany, 1839)
• Abraliopsis pfefferi Joubin, 1896 accepted as Abraliopsis morisii (Vérany, 1839)
• Abranches Smith, 1947 accepted as Gobiopsis Steindachner, 1861
• Abranches pinto Smith, 1947 accepted as Gobiopsis pinto (Smith, 1947)
• Abudefduf Forsskål, 1775
• Abudefduf anabatoides (Bleeker, 1847) accepted as Neopomacentrus anabatoides (Bleeker, 1847)
• Abudefduf annulatus (Peters, 1855) accepted as Chrysiptera annulata (Peters, 1855)
• Abudefduf bankieri (Richardson, 1846) accepted as Neopomacentrus bankieri (Richardson, 1846)
• Abudefduf bengalensis (Bloch, 1787)
• Abudefduf biocellatus (Quoy & Gaimard, 1825) accepted as Chrysiptera biocellata (Quoy & Gaimard, 1825)
• Abudefduf cingulum (Klunzinger, 1871) accepted as Plectroglyphidodon leucozonus (Bleeker, 1859)
• Abudefduf dasygenys Fowler, 1935 accepted as Chromis dasygenys (Fowler, 1935)
• Abudefduf dickii (Liénard, 1839) accepted as Plectroglyphidodon dickii (Liénard, 1839)