| Nominal Species (n = 15) | Present allocation (n = 13) | Ref. |
|---|---|---|
| Proboscidactyla abyssicola Uchida, 1947 | Proboscidactyla abyssicola | 19 |
| Proboscidactyla circumsabella Hand, 1954 | Proboscidactyla circumsabella | 1663 |
| Proboscidactyla conica Menon, 1932 | Proboscidactyla ornata | 75097 |
| Proboscidactyla flavicirrata Brandt, 1835 | Proboscidactyla flavicirrata | 19 |
| Willia furcata Haeckel, 1879 | Proboscidactyla furcata | 2992 |
| Willia gemmifera Fewkes, 1882 | Proboscidactyla ornata | 19 |
| Proboscidactyla menoni Pages, Bouillon & Gli, 1991 | Proboscidactyla menoni | 19 |
| Willia mutabilis Browne, 1902 | Proboscidactyla mutabilis | 2992 |
| Willia occidentalis Fewkes, 1889 | Proboscidactyla occidentalis | 2992 |
| Pochella oligonema Hartlaub, 1917 | Pochella oligonema | 19 |
| Willsia ornata Mccrady, 1859 | Proboscidactyla ornata | 19 |
| Willia pacifica Maas, 1909 | Proboscidactyla pacifica | 2992 |
| Pochella polynema Hartlaub, 1917 | Pochella polynema | 19 |
| Willsia stellata Forbes, 1846 | Proboscidactyla stellata | 2992 |
| Proboscidactyla trifurcata Xu, Huang & Guo, 2019 | Proboscidactyla trifurcata | 3477 |