| Diplodonta Bronn, 1831 |
| Diplodonta (Microstagon) Cossmann, 1896 |
| Diplodonta (Microstagon) obliqua Philippi, 1846 |
| Diplodonta (Phlyctiderma) Dall, 1899 |
| Diplodonta (Timothynus) Harris & Palmer, 1946 |
| Diplodonta caelata (Reeve, 1850) |
| Diplodonta inezensis (Hertlein & Strong, 1947) |
| Diplodonta notata Dall & Simpson, 1901 |
| Diplodonta nucleiformis (Wagner, 1840) |
| Diplodonta obliqua Philippi, 1846 |
| Diplodonta orbella (Gould, 1851) |
| Diplodonta punctata (Say, 1822) |
| Diplodonta semiaspera Philippi, 1836 |
| Diplodonta semirugosa Dall, 1899 |
| Diplodonta sericata (Reeve, 1850) |
| Diplodonta soror (C. B. Adams, 1852) |
| Diplodonta subquadrata P. P. Carpenter, 1855 |
| Felaniella Dall, 1899 |
| Felaniella candeana (d'Orbigny, 1853) |
| Felaniella cornea (Reeve, 1850) |