• Acanthoica acanthifera Lohmann ex Lohmann, 1913
• Acanthoica acanthos J.Schiller, 1925
• Acanthoica aculeata Kamptner, 1941 accepted as Cyrtosphaera aculeata (Kamptner) A.Kleijne, 1992
• Acanthoica bidentula Lecal-Schlauder, 1951
• Acanthoica biscayensis A.Kleijne, 1992
• Acanthoica brevispina J.Schiller, 1913 accepted as Acanthoica quattrospina var. brevispina (Schiller) Schiller
• Acanthoica cidaris Lecal-Schlauder, 1945 accepted as Anacanthoica cidaris (Lecal-Schlauder) Kleijne, 1992 accepted as Cyrtosphaera cidaris (Lecal-Schlauder) J.R.Young & Bown, 2014
• Acanthoica cidaris var. undulata J.Schlauder (uncertain)
• Acanthoica coronata Lohmann, 1903
• Acanthoica cucullata Lecal-Schlauder, 1951 accepted as Algirosphaera cucullata (Lecal-Schlauder) Jer.R.Young, Probert & Kleijne, 2003
• Acanthoica cucullata f. diademata M.Gardet, 1955 accepted as Helicosphaera ampliaperta Bramlette & Wilcoxon † accepted as Helicopontosphaera ampliaperta (Bramlette & Wilcoxon) Hay †
• Acanthoica janchenii J.Schiller, 1925
• Acanthoica lithostratos J.Schiller, 1926
• Acanthoica maxima Heimdal, 1981
• Acanthoica monospina J.Schiller, 1925
• Acanthoica ordinata Kamptner, 1941 accepted as Alisphaera ordinata (Kamptner) Heimdal, 1973
• Acanthoica ornata Conrad, 1928
• Acanthoica quattrospina Lohmann, 1903
• Acanthoica quattrospina var. brevispina (Schiller) Schiller (uncertain)
• Acanthoica quattrospina var. mediterranea Lecal-Schlauder (uncertain)
• Acanthoica rubens Kamptner, 1941
• Acanthoica rubus Kamptner (uncertain)
• Acanthoica schilleri Conrad, 1928
• Acanthoica trispinosa Ostenfeld
• Acanthosolenia mediterranea F.C.Bernard, 1939
• Actinosphaera deflandrei D.Noël, 1965 † accepted as Watznaueria barnesiae (M.Black) Perch-Nielsen, 1968 †
• Actinozygus fenestratus (Stover) S.Gartner, 1968 † accepted as Perissocyclus fenestratus M.Black, 1971 †
• Actinozygus fragilis A.P.Rood & T.Barnard, 1972 † accepted as Stradnerlithus fragilis (A.P.Rood & T.Barnard) Perch-Nielsen, 1984 †
• Actinozygus regularis (Górka) S.Gartner, 1968 † accepted as Ahmuellerella regularis (Górka) P.Reinhardt & Górka †
• Actinozygus rhombicaulis S.Gartner, 1968 †
• Actinozygus splendens (Deflandre) S.Gartner, 1968 † (uncertain)
• Acuturris scota (Risatti) Wind & S.W.Wise, 1977 †
• Aethiopites circularis Caratini cent.nov. † (uncertain)
• Agalmatoaster binodosus Ben Prins (uncertain)
• Agalmatoaster broennimannii Ben Prins (uncertain)
• Agalmatoaster cruciformis Ben Prins (uncertain)
• Agalmatoaster distinctus Ben Prins (uncertain)
• Agalmatoaster gemmifer Ben Prins (uncertain)
• Agalmatoaster mirus Ben Prins (uncertain)
• Agalmatoaster monstratus Ben Prins (uncertain)
• Agalmatoaster munitus Ben Prins (uncertain)
• Agalmatoaster septemradiatus Klumpp, 1953 † accepted as Discoaster septemradiatus (Klumpp) Martini
• Ahmuellerella angusta (Stradner) Reinhardt, 1965 † accepted as Rhagodiscus angustus (Stradner) P.Reinhardt, 1971 †
• Ahmuellerella biramiculata (Stover) N.Hoffmann (uncertain)
• Ahmuellerella dietzmannii P.Reinhardt, 1965 † accepted as Axopodorhabdus dietzmannii (P.Reinhardt) Wind & S.W.Wise, 1977 †
• Ahmuellerella granulata (Stover) Shumenko, 1976 † accepted as Rhagodiscus asper (Stradner) Reinhardt, 1967 †
• Ahmuellerella granulata P.Reinhardt † accepted as Tetrapodorhabdus decorus (Deflandre) Wind & S.W.Wise, 1977 †
• Ahmuellerella mirabilis (Perch-Nielsen) Shumenko, 1976 † accepted as Ahmuellerella regularis (Górka) P.Reinhardt & Górka †
• Ahmuellerella oblata P.Reinhardt † (uncertain)
• Ahmuellerella octoradiata (Górka) Reinhardt (uncertain)
• Ahmuellerella quadriarcula (D.Noël) D,Noël † accepted as Staurolithites quadriarculus (D.Noël) Wilcoxon, 1972 †
• Ahmuellerella regularis (Górka) P.Reinhardt & Górka †
• Ahmuellerella retiformis Reinhardt (uncertain)
• Ahmuellerella splendens (Deflandre) Reinhardt (uncertain)
• Algirosphaera aurea (C.Bernard & Lecal-Schlauder) R.E.Norris, 1984
• Algirosphaera bicornis (Lecal-Schlauder) Norris, 1984
• Algirosphaera campanula Lecal-Schlauder (uncertain)
• Algirosphaera capulata Heimdal, 1981
• Algirosphaera cucullata (Lecal-Schlauder) Jer.R.Young, Probert & Kleijne, 2003
• Algirosphaera oryza Lecal-Schlauder, 1945
• Algirosphaera quadricornu (Schiller) R.E.Norris, 1984
• Algirosphaera robusta (Lohmann) R.E.Norris, 1984
• Algirosphaera spinulosa Lecal-Schlauder (uncertain)
• Aliculosphaera subantarctica (A.R.Edwards & Perch-Nielsen) M.P.Aubry & Bord, 2009 †
• Alvearium dorsetense Black † (uncertain)
• Amithalithina sigmundii J.J.Pospichal & S.W.Wise †
• Amphizygus brooksii Bukry, 1969 †
• Amphizygus brooksii subsp. nanus Bukry (uncertain)
• Amphizygus microminutus J.G.Hattner & S.W.Wise †
• Amphizygus minimus Bukry, 1969 †
• Amphizygus papillatus Bukry, 1969 †
• Anacanthoica acanthos (J.Schiller) Deflandre, 1952 accepted as Acanthoica acanthos J.Schiller, 1925
• Anacanthoica caballicarus Lecal-Schlauder, 1967 accepted as Acanthoica quattrospina Lohmann, 1903
• Anacanthoica cidaris (Lecal-Schlauder) Kleijne, 1992 accepted as Cyrtosphaera cidaris (Lecal-Schlauder) J.R.Young & Bown, 2014
• Anacanthoica lithostratos (J.Schiller) R.E.Norris, 1984 accepted as Acanthoica lithostratos J.Schiller, 1926
• Anacanthoica ornata (Conrad) Bourrelly, 1968 accepted as Acanthoica ornata Conrad, 1928
• Anacanthoica salomonica Varol, 1989 †
• Anfractus harrisonii Medd, 1979 †
• Anfractus variabilis Medd, 1979 †
• Anoplosolenia brasiliensis (Lohmann) Deflandre, 1952 accepted as Calciosolenia brasiliensis (Lohmann) Jer.R.Young, 2003
• Ansulasphaera helvetica Grün & Zweili, 1980 †
• Anthosphaera aurea C.Bernard & Lecal-Schlauder, 1960 accepted as Algirosphaera aurea (C.Bernard & Lecal-Schlauder) R.E.Norris, 1984
• Anthosphaera bicornis Lecal-Schlauder, 1945 accepted as Algirosphaera bicornis (Lecal-Schlauder) Norris, 1984
• Anthosphaera coronata Gaarder (uncertain)
• Anthosphaera fragaria Kamptner, 1937 accepted as Syracosphaera molischii J.Schiller, 1925
• Anthosphaera lafourcadei (Lecal-Schlauder) Kleijne, 1991 (uncertain)
• Anthosphaera lafourcadii (Lecal) A.Kleijne, 1991
• Anthosphaera origami Cros & McGrane, 2014 accepted as Syracosphaera origami (Cros & McGrane) Archontikis, Young & Cros, 2020
• Anthosphaera oryza (Lecal-Schlauder) Gaarder, 1971 accepted as Algirosphaera oryza Lecal-Schlauder, 1945
• Anthosphaera periperforata Kleijne, 1991 accepted as Syracosphaera periperforata (Kleijne) Archontikis, Young & Cros, 2020
• Anthosphaera quadricornu (J.Schiller) Halldal & Markali, 1955 accepted as Algirosphaera quadricornu (Schiller) R.E.Norris, 1984
• Anthosphaera robusta (Lohmann) Kamptner, 1941 accepted as Algirosphaera robusta (Lohmann) R.E.Norris, 1984
• Apertapetra gronosa (Stover) Bukry (uncertain)
• Apertapetra pemmatoidea (Manivit) M.Black, 1971 †
• Apertapetra samodurovii W.W.Hay, H.Mohler & M.E.Wade † (uncertain)
• Apertapetra umbilicus (Levin) Levin & Joerger (uncertain)
• Apertius dorei G.Goy, 1979 † accepted as Crucirhabdus primulus Ben Prins ex Rood, W.W.Hay & Barnard, 1973 †
• Apistonema aestuari Magne, 1957 (uncertain)
• Apistonema carterae Anand, 1936 accepted as Chrysotila stipitata Anand, 1936
• Apistonema commutatum Pascher, 1925