| Nominal Species (n = 18) | Present allocation (n = 17) | Ref. |
|---|---|---|
| Rhamphostomella aleutica Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella aleutica | 3477 |
| Rhamphostomella aspera Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella aspera | 3477 |
| Astochoporella cassidula Hayward & Thorpe, 1988 | Astochoporella cassidula | 3477 |
| Rhamphostomella commandorica Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella commandorica | 3477 |
| Rhamphostomella costata Lorenz, 1886 | Rhamphostomella costata | 19 |
| Rhamphostomella echinata Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella echinata | 3477 |
| Rhamphostomella hincksi Nordgaard, 1906 | Rhamphostomella hincksi | 19 |
| Umbonula inarmata Kluge, 1962 | Umbonula inarmata | 19 |
| Umbonula littoralis Hastings, 1944 | Umbonula littoralis | 19 |
| Lepralia marginata Calvet, 1909 | Astochoporella cassidula | 87772 |
| Rhamphostomella microavicularia Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella microavicularia | 3477 |
| Rhamphostomella morozovi Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella morozovi | 3477 |
| Rhamphostomella multirostrata Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella multirostrata | 3477 |
| Rhamphostomella obliqua Grischenko, Gordon, Taylor et al., 2022 | Rhamphostomella obliqua | 3477 |
| Umbonula ovicellata Hastings, 1944 | Umbonula ovicellata | 19 |
| Eschara scabra Fabricius, 1780 | Rhamphostomella scabra | 75097 |
| Rhamphostomella spinigera Lorenz, 1886 | Rhamphostomella spinigera | 19 |
| Lepralia verrucosa Esper, 1790 | Umbonula verrucosa | 75097 |