| Nominal Species (n = 55) | Present allocation (n = 50) | Ref. |
|---|---|---|
| Thyasira alleni Carrozza, 1981 | Thyasira alleni | 19 |
| Thyasira anassa Oliver, 2015 | Thyasira anassa | 129163 |
| Thyasira atlantica Payne & Allen, 1991 | Thyasira atlantica | 83435 |
| Parathyasira bamberi Oliver, 2015 | Parathyasira bamberi | 129163 |
| Thyasira bisecta Conrad, 1849 | Conchocele bisecta | 75097 |
| Axinus bongraini Lamy, 1911 | Genaxinus bongraini | 83435 |
| Thyasira brevis Verrill & Bush, 1898 | Thyasira brevis | 19 |
| Spinaxinus caldarium Oliver & Rodrigues, 2017 | Spinaxinus caldarium | 3477 |
| Axinulus careyi Bernard, 1979 | Axinulus careyi | 19 |
| Thyasira conia Dall & Simpson, 1901 | Thyasira conia | 83435 |
| Genaxinus cookianus Fleming, 1950 | Genaxinus cookianus | 8121 |
| Axinopsis cordata Verrill & Bush, 1898 | Axinopsida cordata | 75097 |
| Thyasira croulinensis Jeffreys, 1874 | Axinulus croulinensis | 3477 |
| Adontorhina cyclia Berry, 1947 | Adontorhina cyclia | 19 |
| Thyasira cygnus Dall, 1916 | Thyasira cygnus | 19 |
| Thyasira dearborni Nicol, 1965 | Parathyasira dearborni | 3477 |
| Genaxinus debilis Thiele, 1912 | Thyasira debilis | 3477 |
| Conchocele disjuncta Gabb, 1866 | Conchocele disjuncta | 19 |
| Thyasira dunbari Lubinsky, 1976 | Parathyasira dunbari | 83435 |
| Thyasira elliptica Verrill & Bush, 1898 | Thyasira elliptica | 19 |
| Thyasira eumyaria Sars, 1870 | Thyasira eumyaria | 19 |
| Thyasira falklandica Smith, 1885 | Thyasira falklandica | 3477 |
| Halicardia ferruginea Di Geronimo, 1974 | Thyasira grandis | 1398 |
| Thyasira ferruginea Winckworth, 1932 | Mendicula ferruginosa | 75097 |
| Kellia ferruginosa Forbes, 1844 | Mendicula ferruginosa | 83435 |
| Thyasira ferruginosa Forbes, 1844 | Mendicula ferruginosa | 75097 |
| Maorithyas flemingi Powell, 1955 | Maorithyas flemingi | 8121 |
| Thyasira grandis Verrill & Smith, 1885 | Thyasira grandis | 19 |
| Thyasira granulosa Monterosato, 1874 | Thyasira granulosa | 19 |
| Conchocele lyuhrurngae Lai & Jung, 2022 | Conchocele lyuhrurngae | 3477 |
| Thyasira magellanica Dall, 1901 | Thyasira magellanica | 83435 |
| Maorithyas marama Fleming, 1950 | Maorithyas marama | 8121 |
| Leptaxinus minutus Verrill & Bush, 1898 | Leptaxinus minutus | 19 |
| Thyasira miyadii Habe, 1951 | Thyasira miyadii | 75831 |
| Parathyasira neozelanica Iredale, 1930 | Parathyasira neozelanica | 8121 |
| Axinopsis orbiculata Sars, 1878 | Axinopsida orbiculata | 75097 |
| Thyasira ovoidea Dall, 1889 | Thyasira ovoidea | 19 |
| Thyasira perplicata Salas, 1996 | Thyasira perplicata | 3477 |
| Aligena pisum Dall, 1908 | Adontorhina pisum | 3477 |
| Thyasira polygona Jeffreys, 1863 | Thyasira trisinuata | 75097 |
| Thyasira pygmaea Verrill & Bush, 1898 | Thyasira pygmaea | 19 |
| Thyasira pyriformis Dall, 1886 | Thyasira grandis | 75097 |
| Parathyasira resupina Iredale, 1930 | Parathyasira resupina | 3477 |
| Thyasira rotunda Jeffreys, 1881 | Thyasira rotunda | 19 |
| Cryptodon serricatus Carpenter, 1864 | Axinopsida serricata | 3477 |
| Thyasira simplex Verrill & Bush, 1898 | Thyasira simplex | 19 |
| Thyasira southwardae Oliver & Holmes, 2006 | Thyasira southwardae | 83435 |
| Adontorhina sphaericosa Scott, 1986 | Adontorhina sphaericosa | 19 |
| Thyasira subequatoria Payne & Allen, 1991 | Thyasira subequatoria | 83435 |
| Thyasira subovata Jeffreys, 1881 | Thyasira subovata | 19 |
| Thyasira tokunagai Kuroda & Habe, 1951 | Thyasira tokunagai | 77673 |
| Thyasira tortuosa Jeffreys, 1881 | Thyasira tortuosa | 19 |
| Thyasira tricarinata Dall, 1916 | Thyasira tricarinata | 19 |
| Lucina trisinuata d'Orbigny, 1853 | Thyasira trisinuata | 83435 |
| Thyasira waikanae Fleming, 1950 | Thyasira waikanae | 8121 |