• Acrothrix gracilis Kylin, 1907: unknown
• Acrothrix mirabilis Kylin: unknown
• Acrothrix novaeangliae W.R.Taylor: unknown
• Acrothrix pacifica Okamura & Yamada, 1932: unknown
• Asparagopsis armata Harvey, 1855: unknown
• Asparagopsis svedelii W.R.Taylor, 1945: unknown
• Asparagopsis taxiformis (Delile) Trevisan de Saint-Léon, 1845: unknown
• Bachelotia antillarum (Grunow) Gerloff, 1959: unknown
• Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010: unknown
• Battersia mirabilis Reinke ex Batters, 1890: unknown
• Battersia norrisii (Hollenberg) Gabrielson, Lindstrom & O'Kelly, 2012: unknown
• Battersia plumigera (Holmes ex Hauck) Draisma, Prud'homme & H.Kawai, 2010: unknown
• Battersia racemosa (Greville) Draisma, Prud'homme & H.Kawai, 2010: unknown
• Blastophysa rhizopus Reinke, 1889: unknown
• Boreolithon van-heurckii (Heydrich) A.S.Harvey & Woelkerling, 1995: unknown
• Bryobesia johannae Weber Bosse, 1913: unknown
• Carpomitra cabrerea: unknown
• Carpomitra costata (Stackhouse) Batters, 1902: unknown
• Carpomitra filiformis (Suhr) Papenfuss, 1943: unknown
• Carpomitra longicarpa Simons, 1967: unknown
• Carpomitra madagascariensis Farghaly, 1980: unknown
• Carpomitra scoparia Sonder, 1880: unknown
• Chordaria chordaeformis (Kjellman) H.Kawai & S.-H.Kim, 2002: unknown
• Chordaria cladosiphon Kützing, 1859: unknown
• Chordaria dissessa Setchell & N.L.Gardner, 1924: unknown
• Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817: unknown
• Chordaria gracilis Setchell & N.L.Gardner, 1924: unknown
• Chordaria linearis (J.D.Hooker & Harvey) A.D.Cotton, 1915: unknown
• Chordaria magellanica Kylin, 1940: unknown
• Chordaria okhotskensis N.G.Klochkova & H.-S.Kim, 2012: unknown
• Chroodactylon depressum (G.Martens) V.Krishnamurthy, M.S.Balakrishnan & T.V.Desikachary: unknown
• Chroodactylon filamentosum (Kant & Gupta) E.K.Ganesan, J.A.West & Necchi, 2018: unknown
• Chroodactylon ornatum (C.Agardh) Basson, 1979: unknown
• Chroodactylon wolleanum Hansgirg, 1885: unknown
• Climacosorus mediterraneus Sauvageau, 1933: unknown
• Climacosorus pacificus Perestenko, 1980: unknown
• Coelocladia arctica Rosenvinge, 1893: unknown
• Coilodesme bulligera Strömfelt, 1886: unknown
• Coilodesme californica (Ruprecht) Kjellman, 1889: unknown
• Coilodesme corrugata Setchell & N.L.Gardner, 1924: unknown
• Coilodesme cystoseirae (Ruprecht) Setchell & N.L.Gardner, 1903: unknown
• Coilodesme fucicola (Yendo) Nagai, 1940: unknown
• Coilodesme japonica Yamada, 1938: unknown
• Coilodesme plana Hollenberg & I.A.Abbott, 1965: unknown
• Coilodesme polygnampta Setchell & N.L.Gardner, 1924: unknown
• Coilodesme rigida Setchell & N.L.Gardner, 1924: unknown
• Coilodesme sitchensis Setchell & N.L.Gardner, 1924: unknown
• Colacodictyon reticulatum (Batters) Feldmann, 1955: unknown
• Corallophila atlantica (A.B.Joly & Ugadim) R.E.Norris, 1993: unknown
• Corallophila bella (Setchell & Gardner) R.E.Norris, 1993: unknown
• Corallophila cinnabarina (Grateloup ex Bory) R.E.Norris, 1993: unknown
• Corallophila eatoniana (Farlow) T.O.Cho, H.-G.Choi, G.I.Hansen & S.M.Boo, 2000: unknown
• Corallophila howei (Weber-van Bosse) R.E.Norris, 1993: unknown
• Corallophila huysmansii (Weber-van Bosse) R.E.Norris, 1993: unknown
• Corallophila itonoi (Ardré) R.E.Norris, 1993: unknown
• Corallophila kleiwegii Weber-van Bosse, 1923: unknown
• Corallophila ptilocladioides (R.E.Norris & I.A.Abbott) R.E.Norris, 1993: unknown
• Corallophila verongiae (D.L.Ballantine & M.J.Wynne) R.E.Norris, 1993: unknown
• Cruoriopsis danica Rosenvinge, 1918: unknown
• Cruoriopsis de-zwaanii Weber-van Bosse: unknown
• Cruoriopsis ensisae C.-C.Jao, 1936: unknown
• Cruoriopsis hauckii Batters, 1896: unknown
• Cruoriopsis reinboldii Weber-van Bosse, 1921: unknown
• Cruoriopsis rosenvingii F.C.E.Børgesen: unknown
• Dalmatogloia bryozoi Ercegovic, 1955: unknown
• Delamarea attenuata (Kjellman) Rosenvinge, 1893: unknown
• Elachista antarctica Skottsberg, 1953: unknown
• Elachista australis J.Agardh, 1882: unknown
• Elachista chondrii Areschoug, 1875: unknown
• Elachista claytoniae Skinner, 1985: unknown
• Elachista coccophorae Takamatsu, 1938: unknown
• Elachista falcata Y.-P.Lee, 2000: unknown
• Elachista flaccida (Dillwyn) Fries, 1835: unknown
• Elachista fucicola (Velley) Areschoug, 1842: unknown
• Elachista globulosa (C.Agardh) J.Agardh, 1848: unknown
• Elachista intermedia P.L.Crouan & H.M.Crouan, 1867: unknown
• Elachista jabukae Ercegovic, 1948: unknown
• Elachista lindaueri V.J.Chapman, 1961: unknown
• Elachista meridionalis Skottsberg, 1953: unknown
• Elachista minutissima W.R.Taylor, 1928: unknown
• Elachista mollis Takamatsu, 1938: unknown
• Elachista neglecta Liebmann, 1845: unknown
• Elachista nigra Takamatsu, 1938: unknown
• Elachista nipponica Umezaki, 1965: unknown
• Elachista okamurae Yoshida, 1997: unknown
• Elachista scutulata (Smith) Areschoug, 1843: unknown
• Elachista stellaris J.E. Areschoug, 1842: unknown
• Elachista tenuis Yamada, 1928: unknown
• Elachista vellosa Takamatsu, 1938: unknown
• Elachista zosterae Noda, 1971: unknown
• Epicladia condensata (Setchell & N.L.Gardner) J.N.Norris, 2001: unknown
• Epicladia cyclostoma (Waern) R.Nielsen, 1995: unknown
• Epicladia flustrae Reinke, 1889: unknown
• Epicladia heterotricha (Yarish) R.Nielsen, 1988: unknown
• Epicladia Ilustrae Reinke: unknown
• Epicladia mexicana (Setchell & N.L.Gardner) J.N.Norris, 2001: unknown
• Epicladia perforans (Huber) R.Nielsen, 1980: unknown
• Epicladia phillipsii (Batters) R.Nielsen, 1985: unknown
• Epicladia pontica Rochlina, 1932: unknown
• Epicladia ventriculosa (Børgesen) M.J.Wynne, 1986: unknown