| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Petaloconchus cochlidium Carpenter, 1857 |
Eastern Central Pacific | ||
| Petaloconchus compactus (Carpenter, 1864) |
Compact wormsnail | Northeast Pacific | |
| Petaloconchus complicatus Dall, 1908 |
Southeast Pacific | ||
| Petaloconchus erectus (Dall, 1888) |
Erect wormsnail | Western Atlantic | 4 |
| Petaloconchus floridanus Olsson & Harbison, 1953 |
Florida worm shell | Western Central Atlantic | 3.1 |
| Petaloconchus glomeratus (Linnaeus, 1758) |
Mediterranean Sea | ||
| Petaloconchus keenae Hadfield & Kay, 1972 |
Central Pacific | ||
| Petaloconchus mcgintyi (Olsson & Harbison, 1953) |
McGinty wormsnail | Western Atlantic | 3.5 |
| Petaloconchus montereyensis Dall, 1919 |
Monterey wormsnail | East Pacific | |
| Petaloconchus myrakeenae Absalao & Rios, 1987 |
Western Atlantic | 5 | |
| Petaloconchus nigricans (Dall, 1884) |
Western Central Atlantic | 6 | |
| Petaloconchus renisectus Carpenter, 1857 |
Western Pacific | ||
| Petaloconchus varians (d'Orbigny, 1841) |
Variable wormsnail | Western Atlantic | 20 |