Abyssorhynchia Zezina, 1980 (basis of record)
Abyssorhynchia Zezina, 1980 (name verified source)
Acanthohamingia Ikeda, 1910 (basis of record)
Acanthohamingia Ikeda, 1910 (name verified source)
Actinoposthiidae Hooge, 2001 (basis of record)
Acutocoxae Rauschert, 2017 (additional source)
Agilestia Friend, 1982 (verified source for family)
Agnesia Michaelsen, 1898 accepted as Agnezia C. Monniot & F. Monniot, 1991 (source of synonymy)
Ainigma Helfer, 1938 accepted as Ascorhynchus Sars, 1878 (verified source for family)
Albidiator Lowry & Myers, 2019 (verified source for family)
Amphisopidae Nicholls, 1943 (habitat flag source)
Arcitalitrus Hurley, 1975 (verified source for family)
Argeneuthria Pastorino, 2016 (verified source for family)
Ascopariidae Sterrer, 1998 (basis of record)
Ascorhynchidae Hoek, 1881 (basis of record)
Astrosphaeridae Haeckel, 1881 † (habitat flag source)
Aulacolambrus Paul'son, 1875 (habitat flag source)
Austrotroides Friend, 1982 (verified source for family)
Azadinium Elbrächter & Tillmann, 2009 (habitat flag source)
Azadinium Elbrächter & Tillmann, 2009 (extant flag source)
Barana Dohrn, 1881 accepted as Ascorhynchus Sars, 1878 (verified source for family)
Bathypallenopsis Stock, 1975 (verified source for family)
Bourgueticrinidae Loriol, 1882 (source of synonymy)
Bousfieldia Chou & Lee, 1996 (verified source for family)
Brevitalitrus Bousfield, 1971 (verified source for family)
Calviator Lowry & Myers, 2019 (verified source for family)
Caribitroides Bousfield, 1984 (verified source for family)
Cecezonella Grischenko, Gordon, & Melnik, 2024 (basis of record)
Cerrorchestia Lindeman, 1990 (verified source for family)
Chiltonorchestia Bousfield, 1984 (verified source for family)
Chudo Korshunova, Fletcher & Martynov, 2025 (additional source)
Conjungaspidae Hints, 1999 † (basis of record)
Conjungaspis Hints, 1999 † (verified source for family)
Corrupta Korshunova, Fletcher & Martynov, 2025 (additional source)
Cryptoteuthis Collins, 2004 (verified source for family)
Curiotalitrus Lowry & Coleman, 2012 (verified source for family)
Cyclopella Claus, 1893 accepted as Pterinopsyllus Brady, 1880 (verified source for family)
Dana Lowry, 2011 (verified source for family)
Dendrorchestia Lowry & Myers, 2019 (verified source for family)
Deshurleyella Lowry, Myers & Nakano, 2019 (verified source for family)
Didemnum magnilarvum Millar, 1962 accepted as Polysyncraton magnilarvum (Millar, 1962) (source of synonymy)
Didemnum yolky Monniot & Monniot, 1997 accepted as Didemnum yolki Monniot & Monniot, 1997 (source of synonymy)
Dracorchestia Lowry & Myers, 2019 (verified source for family)
Eutreptia viridis Perty, 1852 (habitat flag source)
Falsimacme Pastorino, 2016 (verified source for family)
Ficus margaretae Iredale, 1931 accepted as Ficus ficus (Linnaeus, 1758) (source of synonymy)
Ficus subintermedius (Orbigny, 1852) accepted as Ficus ficus (Linnaeus, 1758) (source of synonymy)
Fisheraster Halpern, 1970 accepted as Pseudarchaster Sladen, 1889 (verified source for family)
Fleuriella Lowry, Myers & Nakano, 2019 (verified source for family)
Fulgurella Grischenko, Gordon, & Melnik, 2024 (basis of record)
Fulgurellidae Grischenko, Gordon, & Melnik, 2024 (basis of record)
Furtipodia S. H. Tan & Ng, 2003 (habitat flag source)
Glomerula Nielsen, 1931 (extant flag source)
Granulinidae Coovert & Coovert, 1995 (basis of record)
Guyanemidae Petter, 1974 (basis of record)
Hadoprion Eriksson & Bergman, 1998 † (verified source for family)
Hadoprionidae † (basis of record)
Hantazuia Korshunova, Fletcher & Martynov, 2025 (additional source)
Hawaiorchestia Bousfield, 1984 (verified source for family)
Hemipodia patagonica Kinberg, 1866 accepted as Hemipodus simplex (Grube, 1857) (source of synonymy)
Hermaniator Lowry & Myers, 2019 (verified source for family)
Heterokrohniidae Casanova, 1985 (basis of record)
Hodgsonia Schimkewitsch, 1929 accepted as Pallenopsis Wilson, 1881 (verified source for family)
Ignamborchestia Lowry & Myers, 2019 (verified source for family)
Ildraites Eller, 1936 † (verified source for family)
Insulariator Lowry & Myers, 2019 (verified source for family)
Kanikania Duncan, 1994 (verified source for family)
Keratroides Hurley, 1975 (verified source for family)
Kohuroa Lowry, Myers & Nakano, 2019 (verified source for family)
Laevicanotia Day in Jell & Cook, 2025 † (basis of record)
Laurenia Lowry & Myers, 2019 (verified source for family)
Loricidae Iredale & Hull, 1923 (basis of record)
Lutruwitiator Lowry & Myers, 2019 (verified source for family)
Lyssacinosa accepted as Lyssacinosida (source of synonymy)
Makawe Duncan, 1994 (verified source for family)
Metrabdotosidae accepted as Metrarabdotosidae Vigneaux, 1949 (basis of record)
Mexitroides Lindeman, 1990 (verified source for family)
Microdeuthria Pastorino, 2016 (additional source)
Monaxinoides Yamaguti, 1963 (verified source for family)
Monaxinoididae Mamaev, 1990 (basis of record)
Myanmarorchestia Hou in Hou & Zhao, 2017 (verified source for family)
Myelastridae Riedel, 1971 (basis of record)
Myrene Galil, 2001 accepted as Myrine Galil, 2001 (source of synonymy)
Mysticotalitrus Hurley, 1975 (verified source for family)
Myzostoma elegans Jägersten, 1940 (current name source)
Myzostoma ijimai Hara & Okada, 1921 (current name source)
Myzostoma irregulare Graff, 1883 (current name source)
Myzostoma quadrilobatum Fishelson, 1974 (current name source)
Myzostoma tenuispinum von Graff, 1884 (current name source)
Myzostomum antarcticum Stummer-Traunfels, 1908 accepted as Myzostoma antarcticum Stummer-Traunfels, 1908 (source of synonymy)
Myzostomum cirriferum Leuckart, 1836 accepted as Myzostoma cirriferum Leuckart, 1836 (source of synonymy)
Myzostomum deani McClendon, 1906 accepted as Myzostoma deani McClendon, 1906 (source of synonymy)
Myzostomum ijimai Hara & Okada, 1921 accepted as Myzostoma ijimai Hara & Okada, 1921 (source of synonymy)
Myzostomum irregulare Graff, 1883 accepted as Myzostoma irregulare Graff, 1883 (source of synonymy)
Myzostomum mortenseni Jägersten, 1940 accepted as Myzostoma mortenseni Jägersten, 1940 (source of synonymy)
Myzostomum quadrilobatum Fishelson, 1974 accepted as Myzostoma quadrilobatum Fishelson, 1974 (source of synonymy)
Myzostomum tenuispinum von Graff, 1884 accepted as Myzostoma tenuispinum von Graff, 1884 (source of synonymy)
Myzostomum willemoesi von Graff, 1884 accepted as Myzostoma willemoesii von Graff, 1884 (source of synonymy)
Neritiliidae Schepman, 1908 (basis of record)
Niveotanais Polz, 2005 † (extant flag source)