| Pyrgocythara Woodring, 1928 |
| Pyrgocythara albovittata (C. B. Adams, 1845) |
| Pyrgocythara angulosa McLean & Poorman, 1971 |
| Pyrgocythara candidissima (C. B. Adams, 1845) |
| Pyrgocythara cinctella (Pfeiffer, 1840) |
| Pyrgocythara coxi Fargo, 1953 |
| Pyrgocythara emersoni Shasky, 1971 |
| Pyrgocythara filosa Rehder, 1943 |
| Pyrgocythara helena (Dall, 1919) |
| Pyrgocythara melita Dall, 1919 |
| Pyrgocythara plicosa (C. B. Adams, 1850) |
| Pyrgocythara scammoni (Dall, 1919) |
| Pyrgospira McLean, 1971 |
| Pyrgospira obeliscus (Reeve, 1845) |
| Pyrgospira ostrearum (Stearns, 1872) |
| Pyrgospira tampaensis (Bartsch & Rehder, 1939) |
| Raphitominae Bellardi, 1875 |
| Rimosodaphnella Cossmann, 1916 |
| Rimosodaphnella morra (Dall, 1881) |
| Rubellatoma Bartsch & Rehder, 1939 |