| Marionia Vayssière, 1877 |
| Marionia tedi E. A. Marcus, 1983 |
| Tritonia Cuvier, 1798 |
| Tritonia bayeri E. A. Marcus & E. G. Marcus, 1967 |
| Tritonia exsulans Bergh, 1894 |
| Tritonia festiva (Stearns, 1873) |
| Tritonia hamnerorum Gosliner & Ghiselin, 1987 |
| Tritonia myrakeenae Bertsch & Mozqueira, 1986 |
| Tritonia papalotla (Bertsch, Valdés & Gosliner, 2009) |
| Tritonia pickensi E. A. Marcus & E. G. Marcus, 1967 |
| Tritoniidae Lamarck, 1809 |