Actinocyclus actinochilus (Ehrenberg) Simonsen, 1982 accepted as Coscinodiscus actinochilus Ehrenberg, 1844
Actinocyclus adeliae Manguin, 1957 (uncertain > unassessed )
Actinocyclus asteriscus (J.A. Barron) Cong Wu, D.M. Williams, Zhiyuan Peng & Chixin Chen, 2022 †
Actinocyclus cholnokyi VanLandingham, 1967 (uncertain > unassessed )
Actinocyclus complanatus F.S.Castracane degli Antelminelli
Actinocyclus complanatus var. complanatus Castracane, 1886 (uncertain > unassessed )
Actinocyclus curvatulus Janisch, 1874 (uncertain > unassessed )
Actinocyclus curvulatus
Actinocyclus dimorphus (Castracane) Harwood & Maruyama, 1992 accepted as Coscinodiscus dimorphus Castracane, 1886
Actinocyclus divisus (Grunow) Hustedt, 1958 accepted as Coscinodiscus divisus var. divisus Grunow, 1878
Actinocyclus ehrenbergii Ralfs, 1861
Actinocyclus ehrenbergii Schumann, 1867 (uncertain > unassessed )
Actinocyclus ehrenbergii var. asteriscus Barron, 1975 † represented as Actinocyclus asteriscus (J.A. Barron) Cong Wu, D.M. Williams, Zhiyuan Peng & Chixin Chen, 2022 †
Actinocyclus exiguus G.Fryxell & Semina, 1981 (uncertain > unassessed )
Actinocyclus ingens Rattray, 1890 † (uncertain > unassessed )
Actinocyclus ingens var. ovalis R.Gersonde, 1990 (uncertain > unassessed )
Actinocyclus karstenii Van Heurck, 1909 (uncertain > unassessed )
Actinocyclus normanii (Gregory) Hustedt, 1957
Actinocyclus octonarius Ehrenberg, 1837 accepted as Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837
Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (uncertain > unassessed )
Actinocyclus senarius Ehrenberg, 1838 (uncertain > unassessed )
Actinocyclus spiritus T.P.Watkins, 1986 (uncertain > unassessed )
Actinocyclus undulatus J.W.Bailey, 1842 (uncertain > unassessed )
Azpeitia nodulifera (A.W.F.Schmidt) G.A.Fryxell & P.A.Sims, 1986
Azpeitia tabularis (Grunow) G.Fryxell & P.A.Sims, 1986 accepted as Coscinodiscus tabularis var. tabularis Grunow, 1884
Charcotiella australis (G.Karst) S.Blanco & C.E.Wetzel, 2016
Charcotiella irregularis (Perag.) S.Blanco & C.E.Wetzel, 2016
Hemidiscus cuneiformis Wallich, 1860
Hemidiscus karstenii A.P.Jousé, 1965 (uncertain > unassessed )
Hemidiscus ovalis (R.Gersonde) D.M.Harwood & T.Maruyama, 1992 accepted as Actinocyclus ingens var. ovalis R.Gersonde, 1990
Roperia tesselata (Roper) Grunow ex Pelletan, 1889