Akrikos Cutler & Cutler, 1989 accepted as Aspidosiphon Diesing, 1851 (source of synonymy)
Akrikos Cutler & Cutler, 1989 accepted as Aspidosiphon Diesing, 1851 (extant flag source)
Bathyascidia Hartmeyer, 1901 accepted as Ascidia Linnaeus, 1767 (source of synonymy)
Brasacanthus Thatcher, 2001 (current name source)
Brydonellidae Taylor, Casadío & Gordon, 2008 † (current name source)
Bullockrhynchus Chandra, Hanumantha-Rao & Shyamasundari, 1985 (habitat flag source)
Bullockrhynchus Chandra, Hanumantha-Rao & Shyamasundari, 1985 (current name source)
Contraporus Cutler & Cutler, 1985 accepted as Austrosiphon Fisher, 1954 accepted as Sipunculus Linnaeus, 1766 (extant flag source)
Dushana Murina, 1975 accepted as Golfingia Lankester, 1885 (extant flag source)
Dushana Murina, 1975 accepted as Golfingia Lankester, 1885 (source of synonymy)
Edmondsius Gibbs & Cutler, 1987 accepted as Apionsoma Sluiter, 1902 (source of synonymy)
Edmondsius Gibbs & Cutler, 1987 accepted as Apionsoma Sluiter, 1902 (extant flag source)
Flustridae Fleming, 1828 (current name source)
Haplopomidae Gordon, 2011 (?) (current name source)
Herdmannia Lahille, 1888 accepted as Herdmania Lahille, 1888 (source of synonymy)
Hincksinidae Canu & Bassler, 1925 accepted as Flustridae Fleming, 1828 (source of synonymy)
Isomya Cutler & Cutler, 1985 accepted as Phascolion Théel, 1875 (source of synonymy)
Isomya Cutler & Cutler, 1985 accepted as Phascolion Théel, 1875 (extant flag source)
Lesenka Gibbs, 1985 accepted as Phascolion Théel, 1875 (extant flag source)
Lesenka Gibbs, 1985 accepted as Phascolion Théel, 1875 (source of synonymy)
Montuga Gibbs, 1985 accepted as Phascolion Théel, 1875 (extant flag source)
Montuga Gibbs, 1985 accepted as Phascolion Théel, 1875 (source of synonymy)
Neoeuthyridae Cook, 2011 (?) (current name source)
Phadeonis Popkov, 1993 accepted as Apionsoma Sluiter, 1902 (source of synonymy)
Phadeonis Popkov, 1993 accepted as Apionsoma Sluiter, 1902 (extant flag source)
Rueppellisoma Stephen & Edmonds, 1972 accepted as Phascolosoma Leuckart, 1828 (extant flag source)
Rueppellisoma Stephen & Edmonds, 1972 accepted as Phascolosoma Leuckart, 1828 (source of synonymy)
Satonus Stephen & Edmonds, 1972 accepted as Edmondsius Gibbs & Cutler, 1987 accepted as Apionsoma Sluiter, 1902 (extant flag source)
Sinoflustridae Gordon, 2009 (current name source)
Spinata Cutler & Cutler, 1987 accepted as Golfingia Lankester, 1885 (source of synonymy)
Spinata Cutler & Cutler, 1987 accepted as Golfingia Lankester, 1885 (extant flag source)
Stephensonum Edmonds, 1980 accepted as Golfingia Lankester, 1885 (extant flag source)
Villiophora Cutler & Cutler, 1985 accepted as Phascolion Théel, 1875 (source of synonymy)
Villiophora Cutler & Cutler, 1985 accepted as Phascolion Théel, 1875 (extant flag source)
Xenopsis Johnson, 1969 accepted as Austrosiphon Fisher, 1954 accepted as Sipunculus Linnaeus, 1766 (extant flag source)