List of Nominal Species of Lyonsiellidae
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| Nominal Species (n = 17) | Present allocation (n = 17) | Ref. |
|---|---|---|
| Lyonsiella alaskana Dall, 1895 | Lyonsiella alaskana | 19 |
| Lyonsiella angelika Linse, 2002 | Policordia angelika | 83435 |
| Lyonsiella aotearoa Dell, 1995 | Lyonsiella aotearoa | 8121 |
| Lyonsiella cordata Verrill & Bush, 1898 | Lyonsiella cordata | 19 |
| Policordia diomedea Dall, Bartsch & Rehder, 1938 | Policordia diomedea | 3477 |
| Lyonsiella fragilis Allen & Turner, 1974 | Lyonsiella fragilis | 83435 |
| Lyonsiella frielei Allen & Turner, 1974 | Lyonsiella frielei | 3477 |
| Lyonsiella gemma Verrill, 1880 | Lyonsiella gemma | 19 |
| Lyonsiella granulifera Verrill, 1885 | Lyonsiella granulifera | 3477 |
| Lyonsiella insculpta Jeffereys, 1881 | Policordia insculpta | 75097 |
| Lyonsiella pacifica Dall, 1908 | Lyonsiella pacifica | 93550 |
| Lyonsiella papyracea Smith, 1885 | Policordia papyracea | 3477 |
| Lyonsiella parva Okutani, 1962 | Lyonsiella parva | 75831 |
| Lyonsiella perplexa Allen & Turner, 1974 | Lyonsiella perplexa | 83435 |
| Lyonsiella quaylei Bernard, 1969 | Lyonsiella quaylei | 19 |
| Lyonsiella radiata Dall, 1889 | Policordia radiata | 83435 |
| Lyonsiella uschakovi Gorbunov, 1946 | Policordia uschakovi | 3477 |