| Nominal Species (n = 6) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Strongylocentrotus echinoides Agassiz & Clark, 1907 | Strongylocentrotus pallidus | 75097 |
| Strongylocentrotus fragilis Jackson, 1912 | Strongylocentrotus fragilis | 3477 |
| Toxocidaris franciscana Agassiz, 1863 | Mesocentrotus franciscanus | 3477 |
| Strongylocentrotus intermedius Agassiz, 1863 | Strongylocentrotus intermedius | 74663 |
| Strongylocentrotus polyacanthus Agassiz & Clark, 1907 | Strongylocentrotus polyacanthus | 19 |
| Strongylocentrotus sachalinicus Clark, 1912 | Strongylocentrotus pallidus | 75097 |