• Adontorhina lynnae Valentich-Scott, 2000
• Adontorhina transversa (Payne & Allen, 1991)
• Axinopsida serricata (P. P. Carpenter, 1864)
• Axinulus (Axinulus) brevis (Verrill & K. J. Bush, 1898) represented as Axinulus brevis (Verrill & K. J. Bush, 1898)
• Axinulus (Axinulus) croulinensis (Jeffreys, 1847) represented as Axinulus croulinensis (Jeffreys, 1847)
• Axinulus (Genaxinus) eumyarius (M. Sars, 1870) accepted as Genaxinus eumyarius (M. Sars, 1870)
• Axinulus alleni (Carrozza, 1981)
• Axinulus brevis (Verrill & K. J. Bush, 1898)
• Axinulus croulinensis (Jeffreys, 1847)
• Axinulus eumyarius (M. Sars, 1870) accepted as Genaxinus eumyarius (M. Sars, 1870)
• Axinulus ferrugineus (Winckworth, 1932) accepted as Mendicula ferruginosa (Forbes, 1844)
• Axinulus ferruginosus (Forbes, 1844) accepted as Mendicula ferruginosa (Forbes, 1844)
• Axinulus hadalis (Okutani, Fujikura & Kojima, 1999)
• Axinulus pygmaea (Verrill & K. J. Bush, 1898) accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Axinulus pygmaeus (Verrill & K. J. Bush, 1898) accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Axinulus subequatorius (Payne & Allen, 1991)
• Axinulus subovatus (Jeffreys, 1881) accepted as Thyasira subovata (Jeffreys, 1881)
• Axinulus succisus (Jeffreys, 1876) accepted as Thyasira succisa (Jeffreys, 1876)
• Axinus croulinensis (Jeffreys, 1847) accepted as Axinulus croulinensis (Jeffreys, 1847)
• Axinus croulinensis (Jeffreys, 1847) sensu Jeffreys, 1864 accepted as Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Axinus croulinensis var. rotundata Locard, 1898 accepted as Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Axinus croulinensis var. transversa Locard, 1898 accepted as Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Axinus croulinensis var. truncata J. T. Marshall, 1914 accepted as Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Axinus ferrugineus Locard, 1886 accepted as Mendicula ferruginosa (Forbes, 1844)
• Axinus flexuosus (Montagu, 1803) accepted as Thyasira flexuosa (Montagu, 1803)
• Axinus grandis (A. E. Verrill & S. Smith, 1885)
• Axinus granulosus Monterosato, 1874 accepted as Thyasira granulosa (Monterosato, 1874) accepted as Parathyasira granulosa (Monterosato, 1874)
• Axinus granulosus var. rotundata Monterosato, 1878 accepted as Thyasira granulosa (Monterosato, 1874) accepted as Parathyasira granulosa (Monterosato, 1874)
• Axinus incrassatus Jeffreys, 1876 accepted as Leptaxinus incrassatus (Jeffreys, 1876)
• Axinus incrassatus var. succisa Jeffreys, 1876 accepted as Thyasira succisa (Jeffreys, 1876)
• Axinus orbiculatus (G. Seguenza, 1876) sensu Jeffreys, 1881 accepted as Parathyasira granulosa (Monterosato, 1874)
• Axinus pusillus M. Sars, 1864 accepted as Axinulus croulinensis (Jeffreys, 1847)
• Axinus subovatus Jeffreys, 1881 accepted as Thyasira subovata (Jeffreys, 1881)
• Axinus succisus Jeffreys, 1876 accepted as Thyasira succisa (Jeffreys, 1876)
• Axinus tortuosus Jeffreys, 1881 accepted as Thyasira tortuosa (Jeffreys, 1881)
• Channelaxinus excavatus (Dall, 1901)
• Channelaxinus perplicatus (C. Salas, 1996)
• Clausina croulinensis Jeffreys, 1847 accepted as Axinulus croulinensis (Jeffreys, 1847)
• Conchocele bisecta (Conrad, 1849)
• Conchocele excavata (Dall, 1901) accepted as Channelaxinus excavatus (Dall, 1901)
• Cryptodon (Axinulus) brevis Verrill & K. J. Bush, 1898 accepted as Axinulus brevis (Verrill & K. J. Bush, 1898)
• Cryptodon (Axinulus) pygmaeus Verrill & K. J. Bush, 1898 accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Cryptodon grandis A. E. Verrill & S. Smith, 1885 accepted as Axinus grandis (A. E. Verrill & S. Smith, 1885)
• Cryptodon obsoletus Verrill & K. J. Bush, 1898 accepted as Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Cryptodon pygmaeus Verrill & K. J. Bush, 1898 accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Cryptodon pyriformis Dall, 1886 accepted as Axinus grandis (A. E. Verrill & S. Smith, 1885)
• Cryptodon subovatus (Jeffreys, 1881) accepted as Thyasira subovata (Jeffreys, 1881)
• Genaxinus debilis (Thiele, 1912) accepted as Thyasira debilis (Thiele, 1912)
• Genaxinus eumyarius (M. Sars, 1870)
• Leptaxinus ferruginosus (Forbes, 1844) accepted as Mendicula ferruginosa (Forbes, 1844)
• Leptaxinus incrassatus (Jeffreys, 1876)
• Leptaxinus indusarium P. G. Oliver & Levin, 2006
• Leptaxinus minutus Verrill & K. J. Bush, 1898
• Leptaxinus subovatus (Jeffreys, 1881) accepted as Thyasira subovata (Jeffreys, 1881)
• Mendicula carrozae (Payne & Allen, 1991)
• Mendicula croulinensis (Jeffreys, 1847) accepted as Axinulus croulinensis (Jeffreys, 1847)
• Mendicula ferruginosa (Forbes, 1844)
• Mendicula inflata (Payne & Allen, 1991)
• Mendicula ockelmanni (Keuning & Schander, 2010)
• Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Mendicula pygmaeus (Verrill & K. J. Bush, 1898) accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)
• Mendicula transversa (Payne & Allen, 1991) accepted as Adontorhina transversa (Payne & Allen, 1991)
• Mendicula ultima (Payne & Allen, 1991)
• Parathyasira biscayensis (Payne & Allen, 1991)
• Parathyasira dearborni (Nicol, 1965)
• Parathyasira dunbari (Lubinsky, 1976)
• Parathyasira equalis (Verrill & K. J. Bush, 1898)
• Parathyasira granulosa (Monterosato, 1874)
• Parathyasira subcircularis (Payne & Allen, 1991)
• Ptychina biplicata R. A. Philippi, 1836 accepted as Thyasira biplicata (R. A. Philippi, 1836)
• Spinaxinus caldarium P. G. Oliver & Rodrigues, 2017
• Spinaxinus sentosus P. G. Oliver & Holmes, 2006
• Thyasira (Mendicula) inflata Payne & Allen, 1991 accepted as Mendicula inflata (Payne & Allen, 1991)
• Thyasira (Mendicula) transversa Payne & Allen, 1991 accepted as Adontorhina transversa (Payne & Allen, 1991)
• Thyasira alleni Carrozza, 1981 accepted as Axinulus alleni (Carrozza, 1981)
• Thyasira atlantica Payne & Allen, 1991 accepted as Thyasira tortuosa (Jeffreys, 1881)
• Thyasira biplicata (R. A. Philippi, 1836)
• Thyasira biscayensis Payne & Allen, 1991 accepted as Parathyasira biscayensis (Payne & Allen, 1991)
• Thyasira brevis (Verrill & K. J. Bush, 1898) accepted as Axinulus brevis (Verrill & K. J. Bush, 1898)
• Thyasira croulinensis (Jeffreys, 1847) accepted as Axinulus croulinensis (Jeffreys, 1847)
• Thyasira dearborni Nicol, 1965 accepted as Parathyasira dearborni (Nicol, 1965)
• Thyasira debilis (Thiele, 1912)
• Thyasira dunbari Lubinsky, 1976 accepted as Parathyasira dunbari (Lubinsky, 1976)
• Thyasira equalis (Verrill & K. J. Bush, 1898) accepted as Parathyasira equalis (Verrill & K. J. Bush, 1898)
• Thyasira eumyaria (M. Sars, 1870) accepted as Axinulus eumyarius (M. Sars, 1870) accepted as Genaxinus eumyarius (M. Sars, 1870)
• Thyasira excavata Dall, 1901 accepted as Channelaxinus excavatus (Dall, 1901)
• Thyasira ferruginea (Locard, 1886) accepted as Mendicula ferruginosa (Forbes, 1844)
• Thyasira ferruginea Winckworth, 1932 accepted as Mendicula ferruginosa (Forbes, 1844)
• Thyasira ferruginosa (Forbes, 1844) accepted as Mendicula ferruginosa (Forbes, 1844)
• Thyasira flexuosa (Montagu, 1803)
• Thyasira gouldii (R. A. Philippi, 1845)
• Thyasira grandis (A. E. Verrill & S. Smith, 1885) accepted as Axinus grandis (A. E. Verrill & S. Smith, 1885)
• Thyasira granulosa (Monterosato, 1874) accepted as Parathyasira granulosa (Monterosato, 1874)
• Thyasira incrassata (Jeffreys, 1876) accepted as Leptaxinus incrassatus (Jeffreys, 1876)
• Thyasira inflata Payne & Allen, 1991 accepted as Mendicula inflata (Payne & Allen, 1991)
• Thyasira minuta (Verrill & K. J. Bush, 1898) accepted as Leptaxinus minutus Verrill & K. J. Bush, 1898
• Thyasira obsoleta (Verrill & K. J. Bush, 1898)
• Thyasira perplicata C. Salas, 1996 accepted as Channelaxinus perplicatus (C. Salas, 1996)
• Thyasira plicata (Verrill, 1885) accepted as Channelaxinus perplicatus (C. Salas, 1996)
• Thyasira pygmaea (Verrill & K. J. Bush, 1898) accepted as Mendicula pygmaea (Verrill & K. J. Bush, 1898)