| Nominal Species (n = 88) | Present allocation (n = 83) | Ref. |
|---|---|---|
| Ophiacantha abyssa Kyte, 1982 | Ophiacantha abyssa | 19 |
| Ophioplinthaca amezianeae O'Hara & Stöhr, 2006 | Ophioplinthaca amezianeae | 3477 |
| Ophiacantha antarctica Koehler, 1900 | Ophiacantha antarctica | 3477 |
| Ophioconis antarctica Lyman, 1879 | Ophiolimna antarctica | 3477 |
| Ophiacantha aster Nethupul, Stöhr & Zhang, 2022 | Ophiacantha aster | 3477 |
| Ophioplinthaca athena Clark, 1949 | Ophioplinthaca athena | 3477 |
| Ophiacantha bathybia Clark, 1911 | Ophiacantha bathybia | 19 |
| Ophiothamnus biocal O'Hara & Stöhr, 2006 | Ophiothamnus biocal | 3477 |
| Ophioparva blochi Guille, 1982 | Ophioparva blochi | 3477 |
| Ophioplinthaca brachispina Nethupul, Stöhr & Zhang, 2022 | Ophioplinthaca brachispina | 3477 |
| Ophiacantha cataleimmoida Clark, 1911 | Ophiopthalmus cataleimmoidus | 75097 |
| Ophiacantha chelys Wyville Thomson, 1878 | Ophioplinthaca chelys | 3477 |
| Ophioplinthaca citata Koehler, 1904 | Ophioplinthaca citata | 3477 |
| Ophioceramis clausa Lyman, 1878 | Ophiurothamnus clausa | 3477 |
| Ophiacantha clavigera Koehler, 1907 | Ophiacantha clavigera | 3477 |
| Ophiacantha composita Koehler, 1896 | Ophiacantha composita | 81020 |
| Ophioripa conferta Koehler, 1922 | Ophiomitrella conferta | 3477 |
| Ophiacantha cornuta Lyman, 1878 | Ophiacantha cornuta | 3477 |
| Ophiacantha cosmica Lyman, 1878 | Ophiacantha cosmica | 3477 |
| Ophiomyces danielae Litvinova, 2001 | Ophiomyces danielae | 3477 |
| Ophioplinthaca defensor Koehler, 1930 | Ophioplinthaca defensor | 3477 |
| Ophiomyces delata Koehler, 1904 | Ophiomyces delata | 3477 |
| Ophiacantha diplasia Clark, 1911 | Ophiopthalmus diplasia | 75097 |
| Ophiacantha duplex Koehler, 1897 | Ophiacantha duplex | 81020 |
| Ophiurothamnus eleaumei O'Hara & Stöhr, 2006 | Ophiurothamnus eleaumei | 3477 |
| Ophiacantha enneactis Clark, 1911 | Ophiacantha enneactis | 19 |
| Ophiolamina eprae Stohr & Segonzac, 2006 | Ophiolamina eprae | 8774 |
| Ophiopthalmus eurypoma Clark, 1911 | Ophiopthalmus eurypoma | 19 |
| Ophiacantha eurythra Clark, 1935 | Ophiacantha eurythra | 19 |
| Ophiomitrella falklandica Mortensen, 1936 | Ophiomitrella conferta | 3477 |
| Ophiolebes felli O'Hara & Thuy, 2022 | Ophiolebes felli | 3477 |
| Renetheo felli McKnight, 2003 | Ophiocanops felli | 3477 |
| Ophiacantha frigida Koehler, 1908 | Ophiacantha frigida | 3477 |
| Ophiacantha fuscina O'Hara & Stöhr, 2006 | Ophiacantha fuscina | 3477 |
| Ophiocamax gigas Koehler, 1900 | Ophiocamax gigas | 3477 |
| Ophialcaea glabra Clark, 1901 | Ophiomitrella glabra | 75097 |
| Ophioplinthaca globata Koehler, 1922 | Ophioplinthaca globata | 81020 |
| Ophiacantha gratiosa Koehler, 1897 | Ophiotreta stimulea | 3477 |
| Ophioplinthaca hastata Koehler, 1922 | Ophioplinthaca hastata | 81020 |
| Ophiophthalmus honestus Koehler, 1930 | Ophiomitra leucorhabdota | 81020 |
| Ophiacantha imago Lyman, 1878 | Ophiacantha imago | 3477 |
| Ophiacantha indica Ljungman, 1867 | Ophiacantha indica | 81020 |
| Ophiacantha levispina Lyman, 1878 | Ophiacantha levispina | 3477 |
| Ophiacantha longidens Lyman, 1874 | Ophiacantha longidens | 81020 |
| Ophioplinthaca manillae Guille, 1981 | Ophioplinthaca manillae | 81020 |
| Ophiomitrella mensa O'Hara & Stöhr, 2006 | Ophiomitrella mensa | 3477 |
| Ophiurothamnus musorstomae Guille, 1981 | Ophiurothamnus musorstomae | 81020 |
| Ophuirothamnus musorstomae Guille, 1981 | Ophiurothamnus clausa | 3477 |
| Ophiomyces nadiae Litvinova, 2001 | Ophiomyces nadiae | 3477 |
| Ophiohamus nanus O'Hara & Stöhr, 2006 | Ophiohamus nanus | 3477 |
| Ophiacantha nodosa Lyman, 1878 | Ophiacantha nodosa | 3477 |
| Ophiogyptis nodosa Koehler, 1905 | Ophiomoeris nodosa | 81020 |
| Ophioceramis obstricta Lyman, 1878 | Ophiomoeris obstricta | 3477 |
| Ophiacantha paramedea Hertz, 1926 | Ophiacantha paramedea | 3477 |
| Ophiomitrella parviglobosa O'Hara & Stöhr, 2006 | Ophiomitrella parviglobosa | 3477 |
| Ophiolebes paucispina Clark, 1911 | Ophiosemnotes paucispina | 75097 |
| Ophiolebes paulensis O'Hara & Thuy, 2022 | Ophiolebes paulensis | 3477 |
| Ophiacantha pentactis Mortensen, 1936 | Ophiacantha pentactis | 3477 |
| Ophiacantha pentagona Koehler, 1897 | Ophiacantha pentagona | 81020 |
| Ophiomoeris petalis Nethupul, Stöhr & Zhang, 2022 | Ophiomoeris petalis | 3477 |
| Ophiacantha phragma Ziesenhenne, 1940 | Ophiacantha phragma | 19 |
| Ophiomitra plicata Lyman, 1878 | Ophioplinthaca plicata | 3477 |
| Ophioplinthaca pulchra Koehler, 1904 | Ophioplinthaca pulchra | 81020 |
| Ophiacantha renekoehleri O'Hara & Stöhr, 2006 | Ophiacantha renekoehleri | 3477 |
| Ophiacantha rhachophora Clark, 1911 | Ophiacantha rhachophora | 19 |
| Ophiacantha richeri O'Hara & Stöhr, 2006 | Ophiacantha richeri | 3477 |
| Ophiacantha rosea Lyman, 1879 | Ophiacantha rosea | 3477 |
| Ophiocamax rugosa Koehler, 1904 | Ophiocamax vitrea | 77939 |
| Ophiomitra sarsii Lyman, 1878 | Ophioplinthaca sarsii | 3477 |
| Ophiacantha scissionis Lee, Stöhr, Bae & Shin, 2019 | Ophiacantha scissionis | 3477 |
| Ophiolebes scorteus Lyman, 1878 | Ophiolebes scorteus | 3477 |
| Ophiomitra semele Clark, 1949 | Ophioplinthaca semele | 3477 |
| Ophiacantha serrata Lyman, 1878 | Ophiacantha serrata | 3477 |
| Ophiophthalmus serratus Nethupul, Stöhr & Zhang, 2022 | Ophiophthalmus serratus | 3477 |
| Ophiocopa singularis Koehler, 1922 | Ophiocopa spatula | 3477 |
| Ophiocopa spatula Lyman, 1883 | Ophiocopa spatula | 3477 |
| Ophiotreta speciosa Guille, 1981 | Ophiotreta larissae | 3477 |
| Ophiomitrella stellifera Matsumoto, 1917 | Ophiomitrella stellifera | 3477 |
| Ophiothamnus stultus Koehler, 1904 | Ophiurothamnus clausa | 3477 |
| Ophiomitrella subjecta Koehler, 1922 | Ophiomitrella subjecta | 81020 |
| Ophiotrema tertium Koehler, 1922 | Ophiotrema tertium | 81020 |
| Ophiolebes trachybactra Clark, 1911 | Ophiacantha trachybactra | 75097 |
| Ophiacantha troscheli Lyman, 1878 | Ophiacanthella troscheli | 3477 |
| Ophiacantha vepratica Lyman, 1878 | Ophiacantha vepratica | 3477 |
| Ophiacantha vilis Mortensen, 1924 | Ophiacantha vilis | 88950 |
| Ophiocamax vitrea Lyman, 1878 | Ophiocamax vitrea | 3477 |
| Ophiacantha vivipara Ljungman, 1870 | Ophiacantha vivipara | 3477 |
| Ophiacantha yaldwyni Fell, 1958 | Ophiacantha yaldwyni | 3477 |