| Nominal Species (n = 57) | Present allocation (n = 42) | Ref. |
|---|---|---|
| Iophon abnormale Ridley & Dendy, 1886 | Iophon abnormale | 3477 |
| Iophon abnormalis Ridley & Dendy, 1886 | Iophon abnormale | 87480 |
| Iophon aceratum Hentschel, 1914 | Iophon aceratum | 3477 |
| Cornulum achela Hentschel, 1912 | Cornulum achela | 81807 |
| Fonteia anomala Gray, 1867 | Acarnus innominatus | 75097 |
| Paracornulum atoxa Vacelet, Vasseur & Lévi, 1976 | Zyzzya fuliginosa | 81807 |
| Acarnus bergquistae van Soest, Hooper & Hiemstra, 1991 | Acarnus bergquistae | 81807 |
| Acarnus bicladotylotus Hoshino, 1981 | Acarnus bicladotylotus | 81807 |
| Acarnus caledoniensis Hooper & Lévi, 1993 | Acarnus caledoniensis | 3477 |
| Megaciella cardenasi Goodwin, Berman & Hendry, 2019 | Megaciella cardenasi | 3477 |
| Acarnus carteri Ridley, 1884 | Acarnus innominatus | 75097 |
| Iophon cheliferum Ridley & Dendy, 1886 | Iophon cheliferum | 3477 |
| Iophon chilense Desqueyroux-Faundez & van Soest, 1996 | Iophon chilense | 3477 |
| Acarnus claudei van Soest, Hooper & Hiemstra, 1991 | Acarnus claudei | 81807 |
| Cornulum dubium Hentschel, 1912 | Paracornulum dubium | 81807 |
| Cornulum enteromorphoides Fristedt, 1887 | Cornulum enteromorphoides | 19 |
| Acarnus erithacus de Laubenfels, 1927 | Acarnus erithacus | 3477 |
| Iophon frigidum Lundbeck, 1905 | Iophon frigidum | 3477 |
| Suberites fuliginosa Carter, 1879 | Zyzzya fuliginosa | 81807 |
| Iophon gaussi Hentschel, 1914 | Iophon gaussi | 3477 |
| Halichondria hyndmani Bowerbank, 1858 | Iophon hyndmani | 75097 |
| Isodictya implicita Bowerbank, 1882 | Iophon hyndmani | 75097 |
| Halichondria ingalli Bowerbank, 1866 | Iophon hyndmani | 75097 |
| Iophon ingalli Bowerbank, 1866 | Iophon hyndmani | 75097 |
| Acarnus innominatus Gray, 1867 | Acarnus innominatus | 19 |
| Iophon koltuni Morozov, Sabirov & Zimina, 2019 | Iophon koltuni | 3477 |
| Aka laccadivensis Thomas, 1989 | Zyzzya fuliginosa | 81807 |
| Iophon laminale Ridley & Dendy, 1886 | Iophon laminale | 3477 |
| Plocamia massalis Dendy, 1922 | Zyzzya fuliginosa | 81807 |
| Iophon methanophila Cárdenas, 2019 | Iophon methanophila | 3477 |
| Acarnus nicoleae van Soest, Hooper & Hiemstra, 1991 | Acarnus nicoleae | 3477 |
| Halichondria nigricans Bowerbank, 1866 | Iophon nigricans | 75097 |
| Iophon parvachela Esteves, De Paula, Lerner, Lôbo-Hajdu & Hajdu, 2018 | Iophon parvachela | 3477 |
| Halichondria pattersoni Bowerbank, 1866 | Iophon nigricans | 75097 |
| Amphilectus pilosus Ridley & Dendy, 1886 | Megaciella pilosa | 81807 |
| Iophon pluricorne Topsent, 1907 | Iophon pluricorne | 3477 |
| Acarnus primigenius Hiemstra & Hooper, 1991 | Acarnus primigenius | 81807 |
| Alebion proximum Ridley, 1881 | Iophon proximum | 3477 |
| Iophon radiatum Topsent, 1901 | Iophon radiatum | 3477 |
| Hymedesanisochela rayae Bakus, 1966 | Iophon rayae | 3477 |
| Halichondria scandens Bowerbank, 1866 | Iophon nigricans | 75097 |
| Damiria simplex Keller, 1891 | Damiria simplex | 81807 |
| Damiria simplex fistulata Hentschel, 1912 | Damiria simplex | 81807 |
| Iophon spatulatum Kirkpatrick, 1907 | Iophon unicorne | 3477 |
| Microciona spinulenta Bowerbank, 1866 | Iophon hyndmani | 75097 |
| Cornulum strepsichela Dendy, 1922 | Paracornulum strepsichela | 81807 |
| Lissodendoryx tawiensis Wilson, 1925 | Megaciella tawiensis | 3125 |
| Acarnus ternatus Ridley, 1884 | Acarnus ternatus | 84290 |
| Iophon terranovae Calcinai & Pansini, 2000 | Iophon terranovae | 3477 |
| Cornulum textile Carter, 1876 | Cornulum textile | 1398 |
| Coelosphaera toxifera Wilson, 1925 | Cornulum toxiferum | 3125 |
| Iophon tubiforme Desqueyroux-Faundez & van Soest, 1996 | Iophon tubiforme | 3477 |
| Iophon unicorne Topsent, 1907 | Iophon unicorne | 3477 |
| Damirina verticillata Burton, 1959 | Zyzzya fuliginosa | 81807 |
| Heterocornulum virguliferum Lévi & Lévi, 1983 | Cornulum virguliferum | 3477 |
| Wigginsia wigginsi de Laubenfels, 1953 | Wigginsia wigginsi | 19 |
| Acarnus wolffgangi Keller, 1889 | Acarnus wolffgangi | 81807 |