• Acinetospora crinita (Carmichael) Sauvageau, 1899
• Adelosina laevigata d'Orbigny, 1826
• Adelosina longirostra (d'Orbigny, 1826)
• Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000
• Alexandrium monilatum (J.F.Howell) Balech, 1995
• Ammobaculites ponticus Mikhalevich, 1968
• Ammonia beccarii (Linnaeus, 1758)
• Ammonia perlucida (Heron-Allen & Earland, 1913) accepted as Aubignyna perlucida (Heron-Allen & Earland, 1913)
• Ammoscalaria runiana (Heron-Allen & Earland, 1916)
• Antetintinnidium mucicola (Claparède & Lachmann, 1858) Ganser & Agatha, 2019
• Armorella sphaerica Heron-Allen & Earland, 1932 accepted as Astrammina sphaerica (Heron-Allen & Earland, 1932)
• Arthrocladia villosa (Hudson) Duby, 1830
• Asterionella glacialis Castracane, 1886 (uncertain > unassessed)
• Asterionella japonica Cleve, 1882 (uncertain > unassessed)
• Asterionellopsis glacialis (Castracane) Round, 1990 accepted as Asterionella glacialis Castracane, 1886
• Astrammina rara Rhumbler, 1931
• Astrammina sphaerica (Heron-Allen & Earland, 1932)
• Aubignyna perlucida (Heron-Allen & Earland, 1913)
• Bathysiphon hirudinea (Heron-Allen & Earland, 1932) accepted as Hippocrepinella hirudinea Heron-Allen & Earland, 1932
• Cerataulina bergonii Ostenfeld, 1903 (uncertain > unassessed)
• Cerataulina pelagica (Cleve) Hendey, 1937
• Ceratoneis closterium Ehrenberg, 1839 (uncertain > unassessed)
• Chaetoceros affinis Lauder, 1864
• Chaetoceros socialis H.S.Lauder, 1864
• Choristocarpus tenellus Zanardini, 1860
• Cladosiphon contortus (Thuret) Kylin, 1940
• Cladosiphon mediterraneus Kützing, 1843
• Cladostephus spongiosus (Hudson) C.Agardh, 1817
• Codonella cratera (Leidy, 1879)
• Codonella lagenula (Claparède & Lachmann, 1858) Entz, 1885 accepted as Codonellopsis lagenula (Claparéde & Lachmann, 1858) Jörgensen, 1924
• Codonellopsis lagenula (Claparéde & Lachmann, 1858) Jörgensen, 1924
• Corynophlaea flaccida (C.Agardh) Kützing, 1858
• Corynophlaea umbellata (C.Agardh) Kützing, 1843
• Coxliella helix (Claparède & Lachmann, 1858) (uncertain > nomen dubium)
• Cribroelphidium incertum (Williamson, 1858) accepted as Elphidium incertum (Williamson, 1858) accepted as Toddinella incerta (Williamson, 1858)
• Cribroelphidium poeyanum (d'Orbigny, 1839)
• Cutleria adspersa (Mertens ex Roth) De Notaris, 1842
• Cutleria chilosa (Falkenberg) P.C.Silva, 1957
• Cyclotella caspia Grunow, 1878 (uncertain > unassessed)
• Cyclotella choctawhatcheeana Prasad, 1990 (uncertain > unassessed)
• Cylindrocarpus microscopicus P.L.Crouan & H.M.Crouan, 1851
• Cylindrotheca closterium (Ehrenberg) Reimann & J.C.Lewin, 1964
• Cystoseira barbata (Stackhouse) C.Agardh, 1820 accepted as Treptacantha barbata (Stackhouse) Orellana & Sansón, 2019 accepted as Gongolaria barbata (Stackhouse) Kuntze, 1891
• Cystoseira crinita Duby, 1830 accepted as Ericaria crinita (Duby) Molinari & Guiry, 2020
• Cyttarocylis helix Jørgensen, 1900 accepted as Coxliella helix (Claparède & Lachmann, 1858)
• Cyttarocylis helix var. cochleata Brandt, 1906 accepted as Tintinnopsis cochleata Brandt, 1906
• Dactyliosolen fragilissimus (Bergon) Hasle, 1996 accepted as Rhizosolenia fragilissima f. fragilissima Bergon, 1903
• Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813
• Dictyosiphon chordaria Areschoug, 1847
• Dictyota dichotoma (Hudson) J.V.Lamouroux, 1809
• Dictyota implexa (Desfontaines) J.V.Lamouroux, 1809
• Dictyota linearis (C.Agardh) Greville, 1830 accepted as Dictyota implexa (Desfontaines) J.V.Lamouroux, 1809
• Ditylum brightwellii (T.West) Grunow, 1885 (uncertain > unassessed)
• Ectocarpus arabicus Figari & De Notaris, 1853 accepted as Feldmannia irregularis (Kützing) Hamel, 1939
• Ectocarpus caspicus A.Henckel, 1909
• Ectocarpus fasciculatus Harvey, 1841
• Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819
• Eggerelloides scabrum (Williamson, 1858)
• Eggerelloides scabrus (Williamson, 1858) accepted as Eggerelloides scabrum (Williamson, 1858)
• Elachista fucicola (Velley) Areschoug, 1842
• Elachista scutulata (Smith) Areschoug, 1843
• Elphidiononion poeyanum (d'Orbigny, 1839) accepted as Cribroelphidium poeyanum (d'Orbigny, 1839)
• Elphidium incertum (Williamson, 1858) accepted as Toddinella incerta (Williamson, 1858)
• Elphidium macellum (Fichtel & Moll, 1798)
• Elphidium poeyanum (d'Orbigny, 1839) accepted as Elphidiononion poeyanum (d'Orbigny, 1839) accepted as Cribroelphidium poeyanum (d'Orbigny, 1839)
• Elphidium ponticum Dolgopolskaya & Pauli, 1931
• Ericaria crinita (Duby) Molinari & Guiry, 2020
• Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882
• Eutintinnus lususundae (Entz, 1884) accepted as Eutintinnus lusus-undae (Entz, 1885)
• Eutintinnus lusus-undae (Entz, 1885)
• Favella echrenbergi (Claparède & Lachmann, 1858) accepted as Favella ehrenbergii (Claparède & Lachmann, 1858) Jörgensen, 1924
• Favella ehrenbergii (Claparède & Lachmann, 1858) Jörgensen, 1924
• Feldmannia caespitula (J.Agardh) Knoepffler-Péguy, 1970 accepted as Feldmannia paradoxa (Montagne) Hamel, 1939
• Feldmannia irregularis (Kützing) Hamel, 1939
• Feldmannia lebelii (Areschoug ex P.Crouan & H.Crouan) Hamel, 1939
• Feldmannia paradoxa (Montagne) Hamel, 1939
• Fissurina staphyllearia Schwager, 1866
• Giraudia sphacelarioides Derbès & Solier, 1851
• Glomospira gordialis (Jones & Parker, 1860)
• Gongolaria barbata (Stackhouse) Kuntze, 1891
• Gymnodinium sanguineum K.Hirasaka, 1922 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000
• Gymnodinium uberrimum (G.J.Allman) Kofoid & Swezy, 1921
• Halopteris scoparia (Linnaeus) Sauvageau, 1904
• Heterocapsa triquetra (Ehrenberg) F.Stein, 1883 accepted as Kryptoperidinium triquetrum (Ehrenberg) U.Tillmann, M. Gottschling, M.Elbrächter, W.-H.Kusber & M.Hoppenrath, 2019
• Hippocrepinella hirudinea Heron-Allen & Earland, 1932
• Kryptoperidinium triquetrum (Ehrenberg) U.Tillmann, M. Gottschling, M.Elbrächter, W.-H.Kusber & M.Hoppenrath, 2019
• Labyrinthula macrocystis L. Cienkowski, 1867
• Labyrinthula vitellina L. Cienkowski, 1867
• Labyrinthula vitellina var. vitellina Cienkowski
• Lagena lateralis Cushman, 1913 accepted as Parafissurina lateralis (Cushman, 1913)
• Lagena ovum (Ehrenberg, 1843) accepted as Oolina ovum (Ehrenberg, 1843)
• Lagena perlucida (Montagu, 1803)
• Lagena staphyllearia (Schwager, 1866) accepted as Fissurina staphyllearia Schwager, 1866
• Laryngosigma subulata (Chapman & Parr, 1937)
• Laryngosigma williamsoni (Terquem, 1878)
• Leathesia difformis Areschoug, 1847 accepted as Leathesia marina (Lyngbye) Decaisne, 1842
• Leathesia marina (Lyngbye) Decaisne, 1842
• Leathesia mucosa Feldmann, 1935
• Leprotintinnus pellucidum (Cleve, 1899) accepted as Leprotintinnus pellucidus (Cleve, 1899)
• Leprotintinnus pellucidus (Cleve, 1899)