List of Nominal Species of Diazonidae
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| Nominal Species (n = 41) | Present allocation (n = 40) | Ref. |
|---|---|---|
| Pseudodiazona abyssa Monniot & Monniot, 1974 | Pseudodiazona abyssa | 19 |
| Diazona angulata Monniot & Monniot, 1996 | Diazona angulata | 19 |
| Tylobranchion antarcticum Herdman, 1902 | Tylobranchion antarcticum | 19 |
| Rhopalaea birkelandi Tokioka, 1971 | Rhopalaea birkelandi | 19 |
| Atriolum bucinum Kott, 2001 | Atriolum bucinum | 19 |
| Diazona carnosa Monniot & Monniot, 1996 | Diazona carnosa | 19 |
| Syndiazona chinensis Tokioka, 1955 | Diazona chinensis | 1661 |
| Rhopalaea circula Monniot, & Monniot, 2001 | Rhopalaea circula | 19 |
| Protopolyclinum claviforme Kott, 1963 | Pseudodiazona claviformis | 19 |
| Rhopalaea cloneyi Vazquez & Young, 1996 | Rhopalaea cloneyi | 3477 |
| Ecteinascidia crassa Herdman, 1880 | Rhopalaea crassa | 1661 |
| Rhopalaea desme Monniot & Monniot, 2003 | Rhopalaea desme | 2258 |
| Atriolum eversum Kott, 2001 | Atriolum eversum | 19 |
| Diazona formosa Monniot & Monniot, 1996 | Diazona formosa | 19 |
| Diazona fungia Monniot, & Monniot, 2001 | Diazona fungia | 19 |
| Ecteinascidia fusca Herdman, 1880 | Rhopalaea fusca | 1661 |
| Diazona geayi Caullery, 1914 | Diazona geayi | 19 |
| Leptoclinides glauerti Michaelsen, 1930 | Atriolum glauerti | 1134 |
| Rhopalaea hartmeyeri Salfi, 1927 | Rhopalaea hartmeyeri | 19 |
| Rhopalaea idoneta Shenkar, 2013 | Rhopalaea idoneta | 3477 |
| Diazona labyrinthea Monniot & Monniot, 1996 | Diazona labyrinthea | 19 |
| Atriolum lilium Kott, 2001 | Atriolum lilium | 19 |
| Rhopalaea macrothorax Tokioka, 1953 | Rhopalaea macrothorax | 1661 |
| Atriolum marinense Kott, 2001 | Atriolum marinense | 19 |
| Atriolum marsupialis Monniot, 1989 | Atriolum marsupialis | 19 |
| Rhopalaea meridionalis Kott, 2006 | Rhopalaea meridionalis | 3477 |
| Rhopalaea mutuensis Oka, 1927 | Rhopalaea sagamiana | 19 |
| Rhopalaea neapolitana Philippia, 1843 | Rhopalaea neapolitana | 19 |
| Rhopalaea orientalis Pérès, 1958 | Rhopalaea orientalis | 3477 |
| Diazona pedunculata Monniot, & Monniot, 2001 | Diazona pedunculata | 19 |
| Rhopalaea perlucida Monniot, 1997 | Rhopalaea perlucida | 19 |
| Rhopalaea piru Monniot & Monniot, 1987 | Rhopalaea piru | 19 |
| Rhopalaea respiciens Monniot, 1991 | Rhopalaea respiciens | 19 |
| Atriolum robustum Kott, 1983 | Atriolum robustum | 19 |
| Rhopalaea sagamiana Oka, 1927 | Rhopalaea sagamiana | 19 |
| Tylobranchion speciosum Herdman, 1886 | Tylobranchion speciosum | 19 |
| Diazona tenera Monniot & Monniot, 1996 | Diazona tenera | 19 |
| Rhopalopsis tenuis Sluiter, 1904 | Rhopalaea tenuis | 19 |
| Diazona textura Monniot, 1987 | Diazona textura | 19 |
| Atriolum tubiporum Kott, 2001 | Atriolum tubiporum | 19 |
| Diazona violacea Savigny, 1816 | Diazona violacea | 19 |