| Timoclea Brown, 1827 |
| Timoclea grus (Holmes, 1858) |
| Timoclea pygmaea (Lamarck, 1818) |
| Tivela Link, 1807 |
| Tivela (Pachydesma) Conrad, 1854 |
| Tivela (Pachydesma) stultorum (Mawe, 1823) |
| Tivela (Planitivella) Olsson, 1961 |
| Tivela (Planitivella) lessonii (Deshayes, 1830) |
| Tivela (Planitivella) planulata (Broderip & G. B. Sowerby I, 1830) |
| Tivela (Tivela) Link, 1807 |
| Tivela (Tivela) argentina (G. B. Sowerby I, 1835) |
| Tivela (Tivela) byronensis (Gray, 1838) |
| Tivela (Tivela) delessertii (G. B. Sowerby II, 1854) |
| Tivela (Tivela) lineata (G. B. Sowerby II, 1851) |
| Tivela (Tivela) mactroides (Born, 1778) |
| Tivela (Tivela) trigonella (Lamarck, 1818) |
| Tivela abaconis Dall, 1902 |
| Tivela floridana Rehder, 1939 |
| Tivela scarificata S. S. Berry, 1940 |
| Transennella Dall, 1884 |