| Amphiura palmeri Lyman, 1882 |
| Amphiura partita Koehler, 1897 |
| Amphiura pugetana Lyman, 1860 |
| Amphiura pulchella Lyman, 1869 |
| Amphiura puntarenae Lütken, 1856 |
| Amphiura repens Lyman, 1875 |
| Amphiura riisei Lütken, 1860 |
| Amphiura scabriuscula Lütken, 1859 |
| Amphiura seminuda Lütken & Mortensen, 1899 |
| Amphiura septa Lütken, 1859 |
| Amphiura serpentina Lütken & Mortensen, 1899 |
| Amphiura urtica Lyman, 1860 |
| Amphiura violacea Lütken, 1856 |
| Amphiura vivipara H.L. Clark, 1918 |
| Amphiura wurdermanii Lyman, 1860 |
| Amphiuridae Ljungman, 1867 |
| Dougaloplus A.M. Clark, 1970 |
| Dougaloplus amphacanthus (McClendon, 1909) |
| Dougaloplus gastracanthus (Lütken & Mortensen, 1899) |
| Dougaloplus notacanthus (Lütken & Mortensen, 1899) |