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IRMNG taxon details

Acritarcha †

123  (urn:lsid:irmng.org:taxname:123)

Evitt, 1963
accepted
Phylum
Leiofusidae Eisenack, 1938 † (unrecognised family)
Genus Abacum M.A. Fombella, 1978 †
Genus Acanspthominuscula Pykhova, 1966 †
Genus Acanthodiacrodium B.V. Timofeev, 1958 †
Genus Acantholigotriletes Alyushinskii, Kirichenko & Timofeev, 1957 †
Genus Acantholigotriletum Timofeev, 1959 †
Genus Acanthomarginata S.N. Naumova ex N.I. Umnova in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
Genus Acanthomesotriletes † (uncertain, unassessed)
Order Acanthomorphitae †
Genus Acanthopsophosphaera Naumova, 1964 †
Genus Acanthorytidodiacrodium Timofeev, 1959 †
Genus Acanthosphaera S.N. Naumova, 1968 † (Not validly published)
Genus Acanthotractus † (uncertain, unassessed)
Genus Acanthozonodiacrodium Timofeev, 1959 †
Genus Acriora E.R. Wicander, 1974 †
Order Acritarcha (awaiting allocation) [order] † accepted as Acritarcha † (not needed at order level)
Genus Acrosphaeridium Uutela & Tynni, 1991 †
Genus Acrum M.A. Fombella Blanco, 1977 †
Genus Actinotodissus A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Actinotophasis A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Actipilion A.R. Loeblich Jr., 1970 †
Genus Adara M.A. Fombella Blanco, 1977 †
Genus Adarve M.A. Fombella Blanco, 1977 †
Genus Adorfia G. Burmann, 1970 †
Genus Adornofusa A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Aducta Z.K. Fajzulina in Z.A. Akulcheva et al., 1981 †
Genus Agidelia † (uncertain, unassessed)
Genus Akmanella T. Ivanova, 2009 †
Genus Akomachra G.K. Colbath, 1979 †
Genus Aldridgeisphaera Kozur, 1986 †
Genus Algella † (uncertain, unassessed)
Genus Alicespaeridium Zang & Walter, 1992 † (uncertain, unassessed)
Genus Alicesphaeridium Zang in Zang & Walter, 1992 †
Genus Alisum H. Górka, 1965 †
Genus Alliumella E.K. Vanderflit in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
Genus Alocomurus Playford in Playford & Dring, 1981 †
Genus Alveosphaera V.V. Kirjanov, 1978 †
Genus Amadeusphaeridium Zang & Walter, 1992 †
Genus Ammonidium T.R. Lister, 1970 †
Genus Amoeboidium B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 † (uncertain, unassessed)
Genus Amphitheca Vavrdova & Svobodova, 2010 †
Genus Amphithetochitina A.M. Obut & N.M. Zaslavskaya in N.M. Zaslavskaya, A.M. Obut & N.V. Sennikov, 1984 † (uncertain, unassessed)
Genus Ampullula E. Righi, 1991 †
Genus Amsdenium G. Playford & R. Wicander, 2006 †
Genus Ancilicula G. Claus & B. Nagy, 1962 †
Genus Ancorosphaeridium Sergeev, Knoll & Vorob'eva, 2011 †
Genus Angiospora † (uncertain, unassessed)
Genus Angularia S.R. Samoilovitch ex G. Norris & W.A.S. Sarjeant, 1965 †
Genus Angulisphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
Genus Anguloplanina V.A. Rudavskaja in T.F. Vozzhennikova & B.V. Timofeev, 1973 †
Genus Ankyrotrochos Vecoli, 1999 †
Genus Annularia B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
Genus Annulatopsophosphaera N.G. Pychova in A.Y. Rozanov et al., 1969 †
Genus Annulodiscus M. Hajós, 1966 †
Genus Annulum M.A. Fombella Blanco, 1978 †
Genus Anomaloplaisium H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Anomaloplaisum H. Tappan & A.R. Loeblich Jr., 1971 †
Genus Anshania Ou-yang, 1979 †
Genus Anthatractus J. Deunff, 1954 †
Genus Antrodibrachium G.K. Colbath, 1990 †
Genus Antrosphaera He, 1984 †
Genus Antruejadina F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 † (uncertain, unassessed)
Genus Apectosphaeridium Turner, 1991 † (uncertain, unassessed)
Genus Aphetospora † (uncertain, unassessed)
Genus Apollinarisphaera G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Apophoreta G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Appendisphaera M. Moczydlowska, G. Vidal & V.A. Rudavskaja, 1993 † (uncertain, unassessed)
Genus Aprioschadon A.R. Loeblich Jr. & H. Tappan, 1976 †
Genus Aquadulcum R. Harland & W.A.S. Sarjeant, 1970 † accepted as Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 † (synonym)
Genus Arabisphaera D.O. Hemer & P.W. Nygreen, 1967 †
Genus Aranidium T.V. Jankauskas, 1975 †
Genus Arbusculidium J. Deunff, 1968 †
Genus Archaealetes Naumova, 1950 †
Genus Archaeochytosa Eisenack †
Genus Archaeoconcentrica Naumova †
Genus Archaeodinium O. Shu, 1979 †
Genus Archaeodiscina S.N. Naumova, 1960 †
Genus Archaeofavosina S.N. Naumova, 1960 †
Genus Archaeohystrichosphaeridium Timofeev, 1959 ex Loeblich & Tappan, 1976 †
Genus Archaeomassulina S.N. Naumova, 1968 † (Not validly published)
Genus Archaeopertusina S.N. Naumova, 1960 † (Not validly published)
Genus Archaeopsophosphaera S.N. Naumova, 1968 † (Not validly published)
Genus Archaeosacculina Pykhova, 1967 †
Genus Archaeosacculina S.N. Naumova, 1968 † accepted as Palaeoharpastum R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
Genus Archaeospirulina Stanevich, 2009 †
Genus Arcosphaeridium Uutela & Tynni, 1991 †
Genus Aremoricanium J. Deunff, 1955 †
Genus Arkonia G. Burmann, 1970 †
Genus Arkonites Legault, 1973 †
Genus Armstrongisphaera Kozur, 1986 † accepted as Papinochium Ters & Deflandre, 1966 †
Genus Artemisiocysta P.N. von Benedek, 1972 †
Genus Aryballomorpha F. Martin & L.-M. Yin, 1988 †
Genus Ascidiomorpha Yan, 1995 † (uncertain, unassessed)
Genus Ascostomocystis Drugg & A.R. Loeblich Jr., 1967 †
Genus Asketopalla A.R. Loeblich Jr. & H. Tappan, 1969 †
Genus Asperatopsophosphaera D.A. Schepeleva ex E.A. Assejeva in P.L. Shulga, 1976 †
Genus Asseserium M. Nagovitsin & K.E. Moczydłowska, 2012 †
Genus Asteridium M. Moczydlowska, 1991 †
Genus Asteriscus Kowalski, 1983 †
Genus Asteromorpha Xing in Xing, Ding, Luo, He & Wang, 1984 † (uncertain, unassessed)
Genus Asyncosmium Turner, 1991 † (uncertain, unassessed)
Genus Athabascaella Martin, 1984 †
Genus Attritasporites Combaz, 1967 †
Genus Aureosphaera F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
Genus Aureotesta M. Vavrdová, 1972 †
Genus Auritusphaera Strother, 2008 †
Genus Avalonella Wauthoz & Dorning, 2001 †
Genus Axisphaeridium Eisenack, 1967 †
Genus Bacatisphaera Zhou, Brasier & Xue, 2001 † (uncertain, unassessed)
Genus Bacillidinium Habib & Knapp, 1982 †
Genus Bacisphaeridium A. Eisenack, 1962 †
Genus Baculatireticulatus T.K. Al-Ameri, 1984 †
Genus Bailikania A.A. Trestshetenkova in Z.A. Akulcheva et al., 1981 †
Genus Baiomeniscus A.R. Loeblich Jr., 1970 † (nomen dubium)
Genus Baltisphaera G. Burmann, 1970 †
Genus Baltisphaeridium Eisenack, 1958 †
Genus Baltisphaerosum R.E. Turner, 1984 †
Genus Bambuites Sommer, 1971 †
Genus Barakella F.H. Cramer & M. del Carmen R. Díez, 1977 †
Genus Barathrisphaeridium E.R. Wicander, 1974 †
Genus Barbestiastra W.A.S. Sarjeant & Stancliffe, 1994 †
Genus Bartenia R. Helby, 1987 †
Genus Bavlinella E.D. Shepeleva, 1962 †
Genus Beringiella J.P. Bujak, 1984 †
Genus Beromia Vavrdová, 1986 †
Genus Biannulatisphaerities Neville in Neves et al., 1973 †
Genus Bimerga Wood, 1995 †
Genus Bipatellifera C. Singh, 1983 †
Genus Bisballatum Fang Xiaosi, 1986? †
Genus Bisbullatum Xiaosi Fang, 1987 †
Genus Bispinosphaera P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
Genus Bojasphaera G.K. Colbath, 1990 †
Genus Bothroligotriletes Timofeev, 1958 †
Genus Bothroligotriletum † (uncertain, unassessed)
Genus Bothrotrachytriletes † (uncertain, unassessed)
Genus Bothrotriletes † (uncertain, unassessed)
Genus Brachiprojectidium Habib & Knapp, 1982 †
Genus Bresca M.A. Fombella Blanco, 1978 †
Genus Brestovia L.T. Paskeviciené, 1980 †
Genus Briareus A.H. Knoll, 1992 † (uncertain, unassessed)
Genus Brocholaminaria Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
Genus Brochopsophosphaera E.D. Shepeleva in E.D. Shepeleva & B.V. Timofeev, 1963 †
Genus Brochos Vanderflit & Mikhailova, 1992 † (uncertain, unassessed)
Genus Brochosaccus † (uncertain, unassessed)
Genus Bubomorpha Yin in Chen, Qian, Lin, Zhang, Wang, Yin & Erdtmann, 1985 †
Genus Buchinia N.A. Volkova, 1990 †
Genus Buedingiisphaeridium Schaarschmidt, 1963 †
Genus Bullatosphaera Vorob'eva, Sergeev & Knoll, 2009 †
Genus Caelatosphaera Wicander, Playford & Robertson, 1999 †
Genus Caelestites F.L. Staplin, 1962 † (uncertain, unassessed)
Genus Caiacorymbifer H. Tappan & A.R. Loeblich Jr., 1972 † (uncertain, unassessed)
Genus Caldariola Molyneux in Molyneux & Rushton, 1988 †
Genus Calyxia Willman, 2008 †
Genus Calyxiella I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
Genus Campenia K. Mädler, 1963 †
Genus Candelasphaeridium J. Deunff, 1978 †
Genus Cantabrica F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
Genus Careliella B.V. Timofeev, 1982 † (uncertain, unassessed)
Genus Carinatosphaeridium Eiserhardt, 1984 †
Genus Carminella F.H. Cramer, 1968 †
Genus Carnarvonia I.C. Cookson & A. Eisenack, 1982 † accepted as Narcarvonia M.E. Dettmann & G. Playford, 1994 †
Genus Carnavonia I.C. Cookson & A. Eisenack, 1982 † (uncertain, unassessed)
Genus Casiopea M.A. Fombella Blanco, 1978 †
Genus Castaneasphaera Zhou, Brasier & Xue, 2001 † (uncertain, unassessed)
Genus Catillopsis W.S. Drugg, 1970 †
Genus Caudatopsophosphaera Pykhova †
Genus Cavaspina M. Moczydlowska, G. Vidal & V.A. Rudavskaja, 1993 † (uncertain, unassessed)
Genus Celtiberium M.A. Fombella Blanco, 1977 †
Genus Centrasphaeridium R. Wicander & G. Playford, 1985 †
Genus Centrum A.M. Stanevitch in V.V. Khomentovsky & V. Yu. Shenfil, 1986 † (uncertain, unassessed)
Genus Cephalia S.C.D. Sah & R.K. Kar, 1974 †
Genus Cepillum F.H. Cramer, 1964 †
Genus Cerastum Turner, 1991 † (uncertain, unassessed)
Genus Ceratocystidiopsis G. Deflandre, 1938 †
Genus Ceratophyton V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 †
Genus Cerebrosphaera Butterfield in Butterfield, Knoll & Swett, 1994 †
Genus Chabiosphaera K. Drábek, 1972 †
Genus Chalaziosphaeridium W.A.S. Sarjeant & Stancliffe, 1994 †
Genus Chamaesiphonites P. Palik, 1966 † (nomen dubium)
Genus Chamosphaera G.C. Geng, 1985 † (Not validly published)
Genus Characiosimilis P. Palik, 1966 † (uncertain, unassessed)
Genus Cheilofilum Butterfield, 2005 †
Genus Cheleutochroa A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Chlamydosphaeridia A. Eisenack, 1971 †
Genus Chlorococcites P. Palik, 1966 † (uncertain, unassessed)
Genus Chuttecloska A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Cingulosphaeridium A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
Genus Circinatisphaera Miller, 1987 †
Genus Circumiella E.A. Assejeva, 1974 † (uncertain, unassessed)
Genus Cirrifera I.C. Cookson & A. Eisenack, 1960 †
Genus Cithariplana Srivastava, 1984 † (uncertain, unassessed)
Genus Clausiella P. Palik, 1966 † (uncertain, unassessed)
Genus Clausisphaera F.L. Staplin, 1962 † (uncertain, unassessed)
Genus Clausites S.L. Van Landingham, 1965 † (uncertain, unassessed)
Genus Clavata A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Clavaticystis Habib & Knapp, 1982 †
Genus Cleithronetrum A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Closteromorpha F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 †
Genus Collumosphaera K.P. Jain & S.K. Dutta in S.K. Dutta & K.P. Jain, 1980 †
Genus Comasphaeridium Staplin, 1965 †
Genus Comptaluta H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Conaticystis Habib & Knapp, 1982 †
Genus Concentrites B.S. Venkatachala et al., 1974 †
Genus Conglutinatosphaeridium Timofeev, 1965 †
Genus Conradidium F. Stockmans & Y. Willière, 1969 †
Genus Constrictosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
Genus Contextus † (uncertain, unassessed)
Genus Cooksonella E. Nagy, 1965 †
Genus Cordobesia E.D. Pöthe de Baldis, 1977 †
Genus Cornplanktona S.C.D. Sah & R.K. Kar, 1974 †
Genus Cornuferifusa Jacobson & Achab, 1985 †
Genus Cornutosphaera Sin, 1973 †
Genus Corollasphaeridium Dean & Martin, 1982 †
Genus Coronitesta Uutela & Tynni, 1991 †
Genus Coronopsis O. Wetzel, 1961 †
Genus Corrugasphaera R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
Genus Corvasphaeridium † (uncertain, unassessed)
Genus Coryphidium M. Vavrdová, 1972 †
Genus Costataplicata C. Downie, 1974 †
Genus Costatilobus G. Playford, 1977 †
Genus Costatiplicata † (uncertain, unassessed)
Genus Costatosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
Genus Crameria T.R. Lister, 1970 †
Genus Crassiangulina S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
Genus Crassicorium Buick & Knoll, 1999 † (uncertain, unassessed)
Genus Crassifusa Rodriguez-Gonzalez, 1983 †
Genus Crassisphaeridium E.R. Wicander, 1974 †
Genus Crassosphaerea I.C. Cookson & S. Manum, 1960 † (uncertain, unassessed)
Genus Craterisphaeridium J. Deunff, 1981 †
Genus Creberlumectum R. Harland & W.A.S. Sarjeant, 1970 †
Genus Crinita Vorob'eva, Sergeev & Knoll, 2009 †
Genus Cristallinium Vanguestaine, 1978 †
Genus Crucida Ottone, 1996 †
Genus Crucidia Ottone, 1996 † (uncertain, unassessed)
Genus Crucigenites P. Palik, 1966 †
Genus Cryptosphaera S.C.D. Sah & R.K. Kar, 1974 †
Genus Cryptostromatium Moreau-Benoît, 1974 †
Genus Cuatrifolia F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
Genus Cucumifora Mikhailova, 1986 †
Genus Cucumiforma Mikhailova, 1986 † (uncertain, unassessed)
Genus Cupritia B. Courtinat in B. Courtinat & C. Gaillard, 1980 †
Genus Cyclodictyon I.C. Cookson & A. Eisenack, 1958 †
Genus Cycloposphaeridium Uutela & Tynni, 1991 †
Genus Cyclopsiella Drugg & A.R. Loeblich Jr., 1967 †
Genus Cymatiogalea J. Deunff, 1961 †
Genus Cymatiomorpha W.C. Elsik & D.L. Dilcher, 1974 †
Genus Cymatiosphaeroides Knoll, 1984 †
Genus Cymbosphaeridium T.R. Lister, 1970 †
Genus Cypandinia Herman in Herman & Podkovyrov, 2002 † (uncertain, unassessed)
Genus Cyratosphaerina † (uncertain, unassessed)
Genus Cyrcumiella † (uncertain, unassessed)
Genus Cystidiopsis E. Nagy, 1965 †
Genus Dactyliotheca G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Dactylofusa Brito & Santos, 1965 †
Genus Daidaphore G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Daillydium F. Stockmans & Y. Willière, 1969 †
Genus Dasydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
Genus Dasydorus G. Playford & F. Martin, 1984 †
Genus Dasypilula A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Dasyrytidodiacrodium Timofeev, 1959 †
Genus Dasysphaeridium Zang & Walter, 1992 †
Genus Dateriocradus H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Decahedrella Manum, 1997 † (uncertain, unassessed)
Genus Deflandridium E. Nagy, 1969 † accepted as Planctonites W. Krutzsch, 1977 † (synonym)
Genus Deltoidina Jiabo, 1978 †
Genus Deltoidinia Jiabo, 1978 † (uncertain, unassessed)
Genus Deltotosoma Playford in Playford & Dring, 1981 †
Genus Demorhethium A.R. Loeblich, Jr. & E.R. Wicander, 1974 †
Genus Densisphaera M. Nagovitsin & K.E. Moczydłowska, 2012 †
Genus Deunffia C. Downie, 1960 †
Genus Deusilites D.O. Hemer & P.W. Nygreen, 1967 †
Genus Diacrocanthidium G. Deflandre & J.-C. Foucher, 1967 †
Order Diacromorphitae †
Genus Diaphorochroa E.R. Wicander, 1974 †
Genus Dichasphaera † (uncertain, unassessed)
Genus Dichotisphaera R.E. Turner, 1984 †
Genus Dichozonata V.V. Kirjanov, 1978 †
Genus Dicommopalla A.R. Loeblich Jr., 1970 †
Genus Dicrodiacrodium G. Burmann, 1968 †
Genus Dicrospinasphaera X. Yuan & H.J. Hofmann, 1998 † (uncertain, unassessed)
Genus Dictyochroa H. Górka, 1965 †
Genus Dictyopsophosphaera Naumova, 1964 †
Genus Dictyosphaera Xing & Liu, 1973 †
Genus Dictyosphaeridium B.V. Timofeev, 1969 †
Genus Dictyosphaeridium W. Wetzel, 1952 †
Genus Dictyotidia A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Diexallophasis A.R. Loeblich Jr., 1970 †
Genus Dilatiphaera T.R. Lister, 1970 † accepted as Dilatisphaera T.R. Lister, 1970 † (misspelling in Nomen. Zool./Zoological Record)
Genus Dilatisphaera T.R. Lister, 1970 †
Genus Dimastigobolus G. Deflandre, 1936 †
Genus Diornatosphaera C. Downie, 1958 †
Genus Diplofusa I.C. Cookson & A. Eisenack, 1960 †
Genus Diplomembrana Yan, 1985 †
Genus Discacerra G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Discina Naumova, 1960 † (uncertain, untraced elsewhere)
Genus Discoidella D. Habib, 1970 †
Genus Disnella L.T. Paskeviciené, 1980 †
Genus Disparifusa A.R. Loeblich Jr., 1970 †
Genus Divietipellis E.R. Wicander, 1974 †
Genus Domasia C. Downie, 1960 †
Genus Domasiella Eisenack, 1969 †
Genus Dominopolia V.V. Kirjanov, 1974 †
Genus Dorsennidium E.R. Wicander, 1974 †
Genus Downiea E.D. Pöthe de Baldis, 1975 †
Genus Dudleyia Eisenack, 1978 †
Genus Dupliciradiatum González, Moreno & Playford, 2005 †
Genus Duplicisphaeridium H. Górka, 1980 †
Genus Duplisphaera M. Moczydlowska, 1998 †
Genus Echinosphaeridium A.H. Knoll, 1992 †
Genus Ecmelostoiba E.R. Wicander, 1974 †
Genus Ecthymabrachion E.R. Wicander, 1974 †
Genus Ecthymapalla A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Ectypolopus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Eisenackidium F.H. Cramer & M. del C. Díez de Cramer, 1968 †
Genus Elektoriskos A.R. Loeblich Jr., 1970 †
Genus Elenia Volkova, 1984 †
Genus Eliasum M.A. Fombella Blanco, 1977 †
Genus Ellipsaletes F.H. Cramer, 1966 †
Genus Ellipsoidella P. Palik, 1966 † (uncertain, unassessed)
Genus Ellipticoporata A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
Genus Enigmadinium Wrenn & Hart, 1988 †
Genus Enneadikosocheia G.K. Colbath, 1979 †
Genus Enretisphaeridium Ou-yang, Yin & Li, 1974 †
Genus Eoaperturilites Yin Leiming, 1985 † (uncertain, unassessed)
Genus Eomarginata T.V. Jankauskas, 1979 †
Genus Eomicrhystridium G. Deflandre, 1968 † (nomen dubium)
Genus Eotintinnopsis Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
Genus Eotylotopalla L.M. Yin, 1987 † (uncertain, unassessed)
Genus Ephelopalla E.R. Wicander, 1974 †
Genus Epicephalopyxis G. Deflandre, 1938 †
Genus Eponula Vavrdová, 1986 †
Genus Ericanthea F.H. Cramer & M. del Carmen R. Díez, 1977 †
Genus Ericiasphaera G. Vidal, 1990 † (uncertain, unassessed)
Genus Erizum † (uncertain, unassessed)
Genus Estiastra A. Eisenack, 1959 †
Genus Ethmosphaeridium Timofeev, 1971 †
Genus Eupoikilofusa F.H. Cramer, 1970 †
Genus Evittia I.M. Brito, 1966 †
Genus Excultibrachium A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Exilisphaeridium E.R. Wicander, 1974 † (uncertain, unassessed)
Genus Exochoderma E.R. Wicander, 1974 †
Genus Eyrea I.C. Cookson & A. Eisenack, 1970 †
Genus Fatkia Vavrdová, 1994 †
Genus Favosina † (uncertain, unassessed)
Genus Favososphaeridium B.V. Timofeev, 1966 †
Genus Favosphaeridium † (uncertain, unassessed)
Genus Fentonia D.A. Bailey & N.M. Hogg, 1995 † (uncertain, unassessed)
Genus Ferromia M. Vavrdová in V. Pokorný, 1979 †
Genus Filisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
Genus Fimbriaglomerella A.R. Loeblich Jr. & Drugg, 1968 †
Genus Flammulasphaera Richards & Mullins, 2003 †
Genus Floris Stanevitch in Stanevi & Zheleznyak, 1990 † (uncertain, unassessed)
Genus Florisphaeridium T.R. Lister, 1970 †
Genus Focusphaera Padilha de Quadros, 1986 †
Genus Foliomorpha Yan, 1985 †
Genus Foveofusa K.M. Lele & A. Chandra, 1972 †
Genus Fractoricoronula G.K. Colbath, 1979 †
Genus Frankea G. Burmann, 1970 †
Genus Frasnacritetrus P. Taugourdeau, 1968 †
Genus Froelichsporites Litwin, Smoot & Weems, 1993 † (uncertain, unassessed)
Genus Fromea Cookson & Eisenack, 1958 †
Genus Fuchunshania Sin & Liu, 1978 †
Genus Fueloepia E. Nagy, 1965 † accepted as Fulopia E. Nagy, 1965 †
Genus Fulgisphaeridium J. Deunff, 1980 †
Genus Fulopia E. Nagy, 1965 † (nomen nudum)
Genus Fülöpia E. Nagy, 1965 † accepted as Fulopia E. Nagy, 1965 †
Genus Fusicoccus K.E. Nagovitsin, 2000 † (Not validly published)
Genus Fusulites D.O. Hemer & P.W. Nygreen, 1967 † (uncertain, unassessed)
Genus Galeasphaeridium Vorob'eva, Sergeev & Knoll, 2009 †
Genus Gangasphaera Prasad & Asher, 2001 † (uncertain, unassessed)
Genus Gemma V.A. Luchinina in I.T. Zhuravleva et al., 1982 † (Not validly published)
Genus Gemmuloides Samuelsson & Butterfield, 2001 † (uncertain, unassessed)
Genus Geron F.H. Cramer, 1966 †
Genus Glaucotesta Vavrdová, 1982 †
Genus Globiferum T.N. Hermann & B.V. Timofeev in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Globosphaeridium M. Moczydlowska, 1991 †
Genus Globosum White, 1844 †
Genus Globulaesphaeridium R.S. Tiwari & A.A. Moiz, 1971 †
Genus Gloecapsamorphites Ou-yang, Yin & Li, 1974 †
Genus Glottimorpha Timofeev, 1966 †
Genus Gneudnaella Playford in Playford & Dring, 1981 †
Genus Gomphomorpha P. Palik, 1966 † (uncertain, unassessed)
Genus Gomphosphaeridium Gao Lianda, 1988 †
Genus Goniolopadion G. Playford, 1977 †
Genus Goniomorpha Yin, 1986 †
Genus Goniosphaeridium Eisenack, 1969 †
Genus Gorgonisphaeridium Staplin, 1965 †
Genus Gorgonosphaeridium † accepted as Gorgonisphaeridium Staplin, 1965 † (misspelling)
Genus Gorynielaa Timofeev, 1973 †
Genus Goryniella B.V. Timofeev, 1973 † (uncertain, unassessed)
Genus Gouhousphaeridium Yang in Yang et al., 1980 †
Genus Gracilisphaeridium A. Eisenack & Cramer in Eisenack et al., 1973 †
Genus Granitunica P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
Genus Granomarginata S.N. Naumova, 1960 †
Genus Granopsophosphaera Naumova, 1964 †
Genus Granularia Kowalski, 1983 †
Genus Guttatisphaeridium E.R. Wicander, 1974 †
Genus Gyalorhethium A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Gyalosphaeridium Zang & Walter, 1992 †
Genus Gyratosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
Genus Halodinium J.P. Bujak, 1984 †
Genus Halophoridia I.C. Cookson & A. Eisenack, 1962 †
Genus Haplocystia K.L. Segroves, 1967 †
Genus Hapsidopalla G. Playford, 1977 †
Genus Helios F.H. Cramer, 1964 †
Genus Heliospermopsis E. Nagy, 1965 †
Genus Heliosphaeridium M. Moczydlowska, 1991 †
Genus Heloriopodum Servais & Molyneux, 1997 †
Genus Helosphaeridium T.R. Lister, 1970 †
Genus Hemibaltisphaeridium F.H. Cramer, 1970 †
Genus Hemideunffia B. Thusu, 1973 †
Genus Hercyniana Burmann, 1976 †
Order Herkomorphitae †
Genus Heteromorphidion A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Hidasia E. Nagy, 1965 †
Genus Hirtellosphaeridium † (uncertain, unassessed)
Genus Hispanaediscus F.H. Cramer, 1966 †
Genus Histopalla Playford in Playford & Dring, 1981 †
Genus Hocosphaeridium Zang & Walter, 1992 †
Genus Hoegklintia K.J. Dorning, 1981 †
Genus Hogklintia K.J. Dorning, 1981 † (uncertain, unassessed)
Genus Holothuriadeigma A.R. Loeblich Jr., 1970 †
Genus Homodiacrodium † (uncertain, unassessed)
Genus Hubeisphaera Sin & Liu, 1978 †
Genus Hungardiscus Krivan-Hutter, 1963 †
Genus Hyalinsphaeridia Bernier & Courtinat, 1979 †
Genus Hymenodiscina Naumova, 1964 †
Genus Hymenophacoides Roblot, 1967 †
Genus Hymenosphaeridium † (uncertain, unassessed)
Genus Hypertrachytriletes † (uncertain, unassessed)
Genus Hyrtellosphaeridium Naumova †
Genus Hystrichoangulatum Wilson & Hoffmeister in Downie & Sarjeant, 1965 †
Genus Hystrichocorpulentum Willson & Hoffmeister in Downie & Sarjeant, 1965 †
Genus Hystrichosphaeridina † (uncertain, unassessed)
Genus Hystrichosphaeridium S.N. Naumova, 1968 † (Not validly published)
Genus Hystrichotriangulatum Andreeva, 1966 †
Genus Iberosphaeridium F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
Genus Impluviculus A.R. Loeblich Jr & H. Tappan, 1969 †
Genus Incurvatina S.N. Naumova & N.I. Umnova in N.I. Umnova, 1975 †
Genus Inderites S.A. Abramova & O.F. Marchenko, 1964 †
Genus Indigestosphaeridium Zang & Walter, 1992 †
Genus Induoglobus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Ingulecia B.V. Timofeev, 1982 † (uncertain, unassessed)
Genus Introvertocystis C.M. Mays & J.D. Stilwell, 2012 †
Genus Involusphaeridium P. Filipiak et al., 2020 †
Genus Iroistella J. Deunff, 1980 †
Genus Isiophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
Genus Izhoria I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
Genus Jandiatubaites Padilha de Quadros, 1986 †
Genus Jilinella L.M. Yin, 1987 †
Genus Jilinella Yin, 1984 † (Not validly published (?))
Genus Joehvisphaera Uutela & Tynni, 1991 †
Genus Joviella Matsuoka & Bujak, 1988 †
Genus Jubatasphaera A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Kakabekia E.S. Barghoorn in E.S. Barghoorn & S.A. Tyler, 1965 †
Genus Keltmia Vorob'eva, Sergeev & Knoll, 2009 †
Genus Kerbia P.N. Kolosov & V.A. Rudavskaja in P.N. Kolosov, 1984 † (uncertain, unassessed)
Genus Kildinella B.V. Timofeev in E.D. Shepeleva & B.V. Timofeev, 1963 †
Genus Kildinosphaera Vidal in Vidal & Siedlecka, 1983 †
Genus Kiptophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
Genus Kirbia N.S. Mikhailova & N.A. Volkova in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Kladosphaeridium Vavrdová, 1990 †
Genus Kladothecidium Vavrdová, 1986 †
Genus Knollisphaeridium Willman & Moczydowska, 2008 †
Genus Konderia A.F. Weiss, 1983 †
Genus Korojonia I.C. Cookson & A. Eisenack, 1958 †
Genus Krimodiscus Aristova, 1971 †
Genus Kundasphaera Uutela, 1989 ex Uutela & Tynni, 1991 †
Genus Labyrinthosphaeridium Uutela & Tynni, 1991 †
Genus Lacunalites D.O. Hemer & P.W. Nygreen, 1967 †
Genus Lacunopsophosphaera N.G. Pychova in A.Y. Rozanov et al., 1969 †
Genus Lacunosphaeridium Uutela & Tynni, 1991 †
Genus Ladogella I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
Genus Lancettopsis K. Mädler, 1963 †
Genus Lanveocia J. Deunff, 1978 †
Genus Larvimorpha L.M. Yin, 1987 † (uncertain, unassessed)
Genus Latoporata S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 † (uncertain, unassessed)
Genus Latoporata S.N. Naumova & N.I. Umnova in N.I. Umnova, 1975 †
Genus Lavradosphaera De Schepper & Head, 2008 †
Genus Laxidum † (uncertain, unassessed)
Genus Lecithodinium Habib & Knapp, 1982 † accepted as Micrhystridium Deflandre, 1938 † (currently accepted as subgenus)
Genus Leffingwellia M.J. Head & G. Norris, 2003 † (uncertain, unassessed)
Genus Leioaletes Timofeev, 1955 †
Genus Leioarachnitum Andreeva, 1966 †
Genus Leiodiscina S.N. Naumova, 1968 † (Not validly published)
Genus Leiofusa A. Eisenack, 1938 †
Family Leiofusidae Eisenack, 1938 † accepted as Acritarcha † (unrecognised family)
Genus Leiofusidium T.V. Jankauskas, 1982 †
Genus Leioligotriletes Timofeev, 1958 †
Genus Leioligotriletum † (uncertain, unassessed)
Genus Leiomarginata S.N. Naumova, 1960 † (Not validly published)
Genus Leiominuscula S.N. Naumova, 1960 † (Not validly published)
Genus Leioplanktona R.K. Kar & R.K. Saxena, 1976 †
Genus Leiopsophosphaera S.N. Naumova, 1968 † (Not validly published)
Family Leiosphaeridaceae Timofeev, 1956 †
Genus Leiosphaeridia A. Eisenack, 1958 †
Genus Leiosphaeridium F.L. Staplin, 1961 †
Genus Leiothrichoides T.N. Hermann in B.V. Timofeev, 1974 † (uncertain, unassessed)
Genus Leiovalia Eisenack, 1965 †
Genus Leoniella F.H. Cramer, 1964 †
Genus Leprotolypa G.K. Colbath, 1979 †
Genus Leptobrachion K.J. Dorning, 1981 †
Genus Leptonia Singh, Tewari & Gupta, 1979 † (uncertain, unassessed)
Genus Liepaina Jankauskas & Volkova in Volkova, Kirjanov, Piskun, Paskeviciene & Jankauskas, 1979 †
Genus Liepana V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 † (uncertain, unassessed)
Genus Likropalla G.K. Colbath, 1979 †
Genus Liliosphaeridium Uutela & Tynni, 1991 †
Genus Limaites Padilha de Quadros, 1986 †
Genus Limbicysta Marshall, 1989 †
Genus Linotolypa Eisenack, 1962 †
Genus Liulaobeinella Yan, 1982 †
Genus Liulaobeisphaera Q. Yang et al., 1980 †
Genus Lobomorpha Yan, 1985 †
Genus Lobotheca Vavrdová, 1986 †
Genus Loeblichia Playford & Wicander, 1988 †
Genus Lomatolopas Playford in Playford & Dring, 1981 †
Genus Lophoaletes † (uncertain, unassessed)
Genus Lophodiacrodium B.V. Timofeev, 1958 †
Genus Lophodictyotidium S.A.J. Pocock, 1972 †
Genus Lopholigotriletes Alyushinskii et al., 1957 †
Genus Lopholiotriletum Timofeev, 1959 †
Genus Lophomarginata Pychova, 1969 †
Genus Lophominuscula S.N. Naumova, 1960 † (Not validly published)
Genus Lophopsophosphaera S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 † (uncertain, unassessed)
Genus Lophorytidodiacrodium B.V. Timofeev, 1958 †
Genus Lophosphaera † (uncertain, unassessed)
Genus Lophosphaeridium B.V. Timofeev ex C. Downie, 1963 †
Genus Lophozonodiacrodium Timofeev, 1959 †
Genus Lua F. Martin & L.-M. Yin, 1988 †
Genus Lunulidia A. Eisenack, 1958 †
Genus Lusatia G. Burmann, 1970 †
Genus Luscinasphaera Wicander & Wood, 1997 †
Genus Lusitanium Elaouad-Debbaj, 1981 †
Genus Macroptycha Timofeev, 1973 ex Timofeev et al., 1976 †
Genus Maculatasporites R.S. Tiwari, 1964 †
Genus Mamillara S.N. Naumova, 1968 † (Not validly published)
Genus Maranhites I.M. Brito, 1965 †
Genus Margodiscina † (uncertain, unassessed)
Genus Margomassulina S.N. Naumova ex I.K. Chepikova in M.M. Aliev & K.R. Chepikov, 1971 † (uncertain, unassessed)
Genus Margominuscula S.N. Naumova ex T.V. Jankauskas, 1989 †
Genus Margoporata † (uncertain, unassessed)
Genus Margoporina S.N. Naumova, 1968 † (Not validly published)
Genus Margopylomina S.N. Naumova, 1968 † (Not validly published)
Genus Margosphaera E. Nagy, 1965 †
Genus Marrocanium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
Genus Martinsphaeridium W.A.S. Sarjeant & Vavrdová, 1997 †
Genus Mastigophycus F.-X. Wang & Y.-Y. Zhai, 1982 †
Genus Matanomadhia R.K. Kar & R.K. Saxena, 1976 †
Genus Mathurosphaera C.P. Varma & A.K. Dangwal, 1964 †
Genus Matulamorha F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Matulamorpha F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Mecsekia M. Hajós, 1966 †
Genus Medousapalla Wood & Clendening, 1982 †
Genus Megapolybessurus Vorob'eva, Sergeev & Knoll, 2009 †
Genus Megasacculina S.N. Naumova, 1960 † (Not validly published)
Genus Megascina † (uncertain, unassessed)
Genus Mehlisphaeridium K.L. Segroves, 1967 †
Genus Membranites Al-Ruwaili, 2000 †
Genus Membranolimbus V.S. Maljavkina ex G. Norris & W.A.S. Sarjeant, 1965 †
Genus Membrosphaera Eiserhardt, 1991 †
Genus Mengeosphaera S. Xiao, C. Zhou, P. Liu, D. Wang & X. Yuan, 2014 †
Genus Menneria A.S. Lopuchin, 1971 †
Genus Meridinium Vavrdová, 1989 †
Genus Metaleiofusa D. Wall, 1965 † (nomen dubium)
Genus Metaridium Riding, Matthews, Miles & Wolfard, 1998 †
Genus Miaplacidus M.A. Fombella Blanco, 1978 †
Genus Micrhystridium Deflandre, 1938 †
Genus Micrhystridium S.N. Naumova, 1968 † (Not validly published)
Genus Microagglomeratus Awramik in Allison & Awramik, 1989 †
Genus Microancyratium Habib & Knapp, 1982 †
Genus Microbaculidinium Habib & Knapp, 1982 †
Genus Microconcentrica S.N. Naumova, 1960 † (Not validly published)
Genus Microfasta Morgan, 1975 †
Genus Microrugosa † (uncertain, unassessed)
Genus Microvalia Tynni & Uutela, 1984 †
Genus Minutisphaeridium Tang & Tao in Cai Zhiguo, Zheng Guoguang, Cui Zhantang et al., 1998 † (uncertain, unassessed)
Genus Minutissima Naumova in Naumova & Pavlovski, 1961 †
Genus Mirificysta J.-X. Yu, 1982 †
Genus Miroedichia T.N. Hermann in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Mirosphaera P. Palik, 1966 † (uncertain, unassessed)
Genus Mitroporata A.S. Lopuchin in M.I. Neustadt, 1966 †
Genus Monocrodium P. Pittau, 1985 †
Genus Monosozosphaeridium Zang & Walter, 1992 †
Genus Monotrematosphaeridium Sin, 1962 †
Genus Monotrematum Timofeev, 1960 †
Genus Morcoa M. del Carmen R. Díez & F.H. Cramer, 1977 †
Genus Multangularites P. Palik, 1966 † (uncertain, unassessed)
Genus Multicorisphaeridium Marheinecke, 1992 † (uncertain, unassessed)
Genus Multifronsphaeridium Zang & Walter, 1992 †
Genus Multiplicisphaeridium F.L. Staplin, 1961 †
Genus Multisphaeridium † (uncertain, unassessed)
Genus Mutabilisphaera Zang in Gravestock et al., 2001 †
Genus Mycteroligotriletes Timofeev, 1958 †
Genus Mycteroligotriletum † (uncertain, unassessed)
Genus Naevisphaeridium E.R. Wicander, 1974 †
Genus Nagyiella P. Palik, 1966 † (uncertain, unassessed)
Genus Nannobarbophora Habib & Knapp, 1982 †
Genus Nanocyclopia A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Narcarvonia M.E. Dettmann & G. Playford, 1994 †
Genus Navifusa A. Combaz, F.W. Lange & J. Pansart, 1967 †
Genus Nellia I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
Genus Neoastrion Viswanathiah, Venkatachalapathy & Mahalakshmamma, 1979 †
Genus Neofentonia Özdikmen, 2009 † accepted as Limbicysta Marshall, 1989 †
Genus Neoveryhachium F.H. Cramer, 1970 † (nomen dubium)
Order Netromorphitae †
Genus Nevidia M. Vavrdová, 1966 †
Genus Nexosarium R.E. Turner, 1984 †
Genus Nigrilaminaria Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
Genus Ninadiacrodium Raevskaya & Servais, 2009 †
Genus Nodosus Hagenfeldt, 1989 †
Genus Nodusosphaeridium Uutela, 1989 †
Genus Nollia Eisenack, 1979 †
Genus Nostocomorpha Sin & Liu, 1978 † (uncertain, unassessed)
Genus Nothooidium A.R. Loeblich Jr. & H. Tappan, 1976 †
Genus Nucellohystrichosphaera B.V. Timofeev & T.N. Hermann in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
Genus Nucellosphaera A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Nucellosphaeridium B.V. Timofeev, 1966 †
Genus Nummus Morgan, 1975 †
Genus Obrachevella † accepted as Obruchevella E.A. Reitlinger, 1948 † (misspelling)
Genus Obruchevella E.A. Reitlinger, 1948 †
Genus Ocalasphaera K.F. Prössl, 1992 † (uncertain, unassessed)
Genus Ocridoligotriletes Timofeev, 1958 †
Genus Ocridoligotriletum † (uncertain, unassessed)
Genus Ocridosphaeridium Timofeev, 1973 †
Genus Octaedryxium V.A. Rudavskaja in T.F. Vozzhennikova & B.V. Timofeev, 1973 †
Genus Octaplata S.C.D. Sah & R.K. Kar, 1974 †
Genus Octoedryxium Rudavskaja, 1973 †
Genus Octogonium Martin, 1973 †
Genus Odontomorpha M. Hajós, 1966 †
Genus Odontothrix Habib & Knapp, 1982 †
Genus Okridoligotriletes Alyushinskii et al., 1957 †
Genus Olenekus Stanevich, 2009 †
Genus Oligopogonium A.R. Loeblich Jr. & H. Tappan, 1976 †
Genus Ollula F. Góczán, 1962 †
Genus Omalophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
Genus Onondagella F.H. Cramer, 1966 †
Genus Ooidium B.V. Timofeev, 1957 †
Genus Operculites K.R. Newman, 1965 †
Genus Ophiobolus Wetzel, 1933 †
Genus Oppilatala A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Orbiculus Bagdasaryan, 1980 † (uncertain, unassessed)
Genus Ordovicidium H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Orgulla P.N. Kolosov & V.A. Rudavskaja in P.N. Kolosov, 1984 † (uncertain, unassessed)
Genus Ornatasphaera R.K. Saxena, A. Chandra & M.G.A.P. Setty, 1982 †
Genus Ornatopila P. Palik, 1966 † (uncertain, unassessed)
Genus Ornatosphaeridia R.N. Ogurtsova, 1975 † (uncertain, unassessed)
Genus Orthosphaeridium Eisenack, 1968 †
Genus Orycmatosphaeridium B.V. Timofeev, 1959 † accepted as Orygmatosphaeridium B.V. Timofeev, 1959 †
Genus Orygmatosphaeridium B.V. Timofeev, 1959 †
Genus Oscenoscaeva G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Oscillatorites P. Palik, 1966 †
Genus Osculosphaera Butterfield in Butterfield, Knoll & Swett, 1994 † (uncertain, unassessed)
Genus Oshania F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Ostiumsphaeridium Vorob'eva, Sergeev & Knoll, 2009 †
Genus Oudhkusumites N.C. Srivastava, 1967 †
Genus Ova † accepted as Ovum A. Eisenack, 1931 †
Genus Ovalisacculina Naumova †
Genus Ovnia F.H. Cramer & M. del Carmen R. Díez, 1977 †
Genus Ovulum T.V. Jankauskas, 1975 †
Genus Ovum A. Eisenack, 1931 †
Genus Ovumella De Wever & O'Dogherty, 2006 †
Genus Ozotobrachion Loeblich Jr. & Drugg, 1968 †
Genus Pachysphaeridium G. Burmann, 1970 †
Genus Pachyspheridium G. Burmann, 1970 † (uncertain, unassessed)
Genus Palacanthus E.R. Wicander, 1974 †
Genus Palaeasphaeridium Yin †
Genus Palaeobion O. Wetzel, 1961 †
Genus Palaeocladophora Eklund, 1990 †
Genus Palaeocryptidium G. Deflandre, 1955 † (uncertain, unassessed)
Genus Palaeoharpastum R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
Genus Palaeohystrichosphaeridium Eiserhardt, 1986 †
Genus Palaeomonostroma Eklund, 1990 †
Genus Palaeosolenopora † (uncertain, unassessed)
Genus Palaeostomocystis Deflandre, 1935 †
Genus Palaeovolvox Zang & Walter, 1992 †
Genus Palaiosphaeridium H. Górka, 1980 †
Genus Palanaea S.C.D. Sah & R.K. Kar, 1974 †
Genus Paleamorpha Sin & Liu, 1978 † (uncertain, unassessed)
Genus Paleasphaeridium C.-Y. Yin, 1985 †
Genus Paleopedicystus F.L. Staplin, 1961 †
Genus Paleoperisaccus † (uncertain, unassessed)
Genus Palhistiodinia G. Deflandre, 1939 † (nomen dubium, type specimen unidentifiable)
Genus Paniculaferum M.A. Miller, 1991 †
Genus Papiliotypus Hashemi & Playford, 1998 † (uncertain, unassessed)
Genus Papilliferum L.M. Yin, 1987 †
Genus Papinochium Ters & Deflandre, 1966 †
Genus Papulogabata Playford in Playford & Dring, 1981 †
Genus Paracymatiosphaera Wang, 1985 † (uncertain, unassessed)
Genus Paralecaniella I.C. Cookson & A. Eisenack, 1970 †
Genus Pardaminela M. del Carmen R. Díez & F.H. Cramer, 1977 †
Genus Passalosphaera Playford & Wicander, 1988 †
Genus Paucilobimorpha J. de Coninck, 1986 † (uncertain, unassessed)
Genus Paulcilobimorpha J. de Coninck, 1986 † accepted as Paucilobimorpha J. de Coninck, 1986 †
Genus Peleduica V.G. Pjatiletov, 1980 † (uncertain, unassessed)
Genus Peramorpha Martin in Martin & Dean, 1983 †
Genus Percultisphaera T.R. Lister, 1970 †
Genus Peregrinixia Habib & Knapp, 1982 †
Genus Perforela M. del Carmen R. Díez & F.H. Cramer, 1977 †
Genus Perissolagonella A.R. Loeblich Jr. & E.R. Wicander, 1976 †
Genus Perticiella He, Gao & Qiao, 1992 † (uncertain, unassessed)
Genus Pertusisphaeridium Turner, 1986 †
Genus Petaloferidium S.R. Jacobson, 1978 †
Genus Peteinosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
Genus Petrovina S. Loboziak, J.H.G. Melo, L.P. Quadros & M. Streel, 1997 †
Genus Phenacoon Vecoli & Playford, 1997 †
Genus Pheoclosterium H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Phoenisphaeridium J. Deunff in Eisenack et al., 1976 †
Genus Phormidites P. Palik, 1966 † (nomen dubium)
Genus Picostella F.H. Cramer, B. Allam, W.H. Kanes & M. del C.R. Díez, 1974 †
Genus Pictonicopila G. Deflandre & M. Ters, 1966 †
Genus Piliferosphaera A.R. Loeblich Jr., 1970 †
Genus Pilisphaera † (uncertain, unassessed)
Genus Pilula S.D. Harker & W.A.S. Sarjeant in Marker, Sarjeant & Caldwell, 1990 † (uncertain, unassessed)
Genus Pinocchiodinium Torricelli, 2000 † (uncertain, unassessed)
Genus Piperodinium Mudie in Scott, Mudie, Vilks & Younger, 1984 †
Genus Pirea M. Vavrdová, 1972 †
Genus Planctonites W. Krutzsch, 1977 †
Genus Platycystidia I.C. Cookson & A. Eisenack, 1960 †
Genus Plicatofusa L.I. Sheshegova, 1984 †
Genus Plicatosphaera Potter in Baudelot & Gery, 1979 †
Genus Plicatosphaeridium Butterfield, 2005 †
Genus Podoliella B.V. Timofeev, 1973 †
Genus Poikilofusa Staplin, 1965 †
Genus Pololeptus Yin in Leiming Yin & Weiguo Sun, 1994 † (uncertain, unassessed)
Genus Polonisphaeridium † (uncertain, unassessed)
Genus Polonosphaeridium H. Górka, 1987 †
Genus Polyancistrodorus A.R. Loeblich Jr. & H. Tappan, 1969 †
Genus Polydeunffia F.H. Cramer, 1970 †
Genus Polyedrina Padilha de Quadros, 1986 †
Genus Polyedrosphaeridium B.V. Timofeev, 1962 † (uncertain, unassessed)
Genus Polyedrosphaeridium B.V. Timofeev, 1966 †
Genus Polyedryxium J. Deunff, 1954 †
Genus Polyforama Naumova in Pykhova, 1969 †
Genus Polygoniomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Polygonium M. Vavrdová, 1966 †
Order Polygonomorphitae †
Genus Polyhedrosphaeridium Zang & Walter, 1992 †
Genus Polynucella Xing & Liu, 1973 †
Genus Polyplanifer F.H. Cramer, 1964 †
Genus Polyporata Pykhova, 1966 †
Genus Polythrichoides T.N. Hermann in B.V. Timofeev, 1974 † (uncertain, unassessed)
Genus Portalites D.O. Hemer & P.W. Nygreen, 1967 †
Genus Porusphaera Jiabo, 1978 †
Genus Praedermocarpites Ou-yang, Yin & Li, 1974 †
Genus Pratulasphaera R. Wicander & G. Playford, 1985 †
Genus Priscogalea Deunff, 1961 †
Genus Priscotheca J. Deunff, 1961 †
Genus Prismatocystis D. Habib, 1969 †
Order Prismatomorphitae †
Genus Prolixosphaeridiopsis Hogg & Bailey, 1997 †
Genus Proteolobus Wood, 1997 †
Genus Protoarchaeosacculina S.N. Naumova, 1960 † (Not validly published)
Genus Protoleioligotriletum † (uncertain, unassessed)
Genus Protoleiosphaeridium B.V. Timofeev ex B.V. Timofeev, 1960 †
Genus Protolophosphaeridium B.V. Timofeev, 1963 †
Genus Protomassulina S.N. Naumova, 1968 †
Genus Protomycterosphaeridium B.V. Timofeev, 1963 †
Genus Protonucellosphaeridium Timofeev, 1963 †
Genus Protoocridosphaeridium B.V. Timofeev, 1962 †
Genus Protosphaeridium Timofeev, 1966 †
Genus Prototracheites Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
Genus Prototrachysphaeridium B.V. Timofeev, 1963 †
Genus Prototrematosphaeridium B.V. Timofeev, 1962 † (uncertain, unassessed)
Genus Prototylosphaeridium Timofeev, 1963 †
Genus Protovavososphaeridium Timofeev, 1963 †
Genus Protozonosphaeridium Timofeev, 1963 †
Genus Psenotopus H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Pseudodiacrodium Sin & Liu, 1978 †
Genus Pseudofavososphaera Xing, 1982 †
Genus Pseudofromea D. Burger, 1980 †
Genus Pseudolunulidia Brito & Santos, 1965 †
Genus Pseudomaranhites L.P. Quadros, 1996 † accepted as Maranhites I.M. Brito, 1965 † (synonym)
Genus Pseudomasia J. De Coninck, 1969 †
Genus Pseudosaccatina † (uncertain, unassessed)
Genus Pseudotasmanites V.V. Kirjanov, 1974 †
Genus Pseudozonosphaera Xing & Liu, 1973 †
Genus Pseudozonosphaeridium Andreeva, 1966 †
Genus Psilosphaera S.C.D. Sah & R.K. Kar, 1974 †
Genus Pterocystidiopsis G. Deflandre, 1938 †
Genus Pteroidea L.I. Sheshegova, 1975 †
Order Pteromorphitae †
Genus Pterospermopsimorpha B.V. Timofeev, 1962 † (uncertain, unassessed)
Genus Pterospermopsimorpha B.V. Timofeev, 1966 †
Genus Pterotosphaerula F.H. Cramer, 1966 †
Genus Pterrovericatus T.K. Al-Ameri, 1984 † accepted as Pteroverricatus T.K. Al-Ameri, 1984 †
Genus Pulvinomorpha Timofeev, 1966 † (uncertain, unassessed)
Genus Pulvinosphaeridium A. Eisenack, 1954 †
Genus Pustulisphaeridium E.R. Wicander, 1974 †
Genus Puteoscortum E.R. Wicander & A.R. Loeblich Jr., 1977 †
Genus Pylantios M. Quintavalle & G. Playford, 2006 †
Genus Pytinomorpha Playford & Wicander, 1988 †
Genus Quadraditum F.H. Cramer, 1964 †
Genus Quadranidium Stancliffe & Sarjeant, 1996 † (uncertain, unassessed)
Genus Quadrina J.P. Bujak in J.P. Bujak, C. Downie, G.L. Eaton & G.L. Williams, 1980 †
Genus Quadruilobus H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Quantostrobilium W.A.S. Sarjeant & Stancliffe, 1996 †
Genus Quisquilites L.R. Wilson & J.B. Urban, 1963 †
Genus Radiatosphaera Herman in Herman & Podkovyrov, 2002 † (uncertain, unassessed)
Genus Radiophycus Wang, 1985 † (uncertain, unassessed)
Genus Raphesphaera N.A. Volkova, 1990 †
Genus Raplasphaera Uutela & Tynni, 1991 †
Genus Recticystis Schrank, 2003 †
Genus Reticultum † (uncertain, unassessed)
Genus Retiforma N.S. Mikhailova in N.S. Mikhailova & V.N. Podkovyrov, 1987 † (uncertain, unassessed)
Genus Retinarites Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
Genus Retisphaeridium Staplin, 1965 †
Genus Revinotesta M. Vanguestaine, 1974 †
Genus Rhachosoarium H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Rhacobrachion K.J. Dorning, 1981 †
Genus Rhaetosphaeridium W.A.S. Sarjeant & Vavrdová, 1997 †
Genus Rhiptosocherma A.R. Loeblich Jr. & H. Tappan, 1978 †
Genus Rhombodella I.C. Cookson & A. Eisenack, 1962 †
Genus Rhopaliophora H. Tappan & A.R. Loeblich Jr., 1972 †
Genus Riculasphaera A.R. Loeblich Jr. & Drugg, 1968 †
Genus Rifeniata S.N. Naumova, 1968 † (Not validly published)
Genus Rifenita S.N. Naumova, 1968 † (Not validly published)
Genus Rimosicysta Marshall, 1989 †
Genus Rosella A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Rudniana Gol †
Genus Rugasphaera Jiabo, 1978 †
Genus Rugasphaera Martin in Martin & Dean, 1988 † accepted as Corrugasphaera R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
Genus Rugidinium S.A.J. Pocock & W.A.S. Sarjeant in S.A.J. Pocock, 1972 †
Genus Rugocystis B.S. Venkatachala et al., 1974 † (uncertain, unassessed)
Genus Rugosoopsis B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
Genus Rugosopsophosphaera Naumova, 1964 †
Genus Rugulasphaeridium D.C. Bharadwaj, R.S. Tiwari & B.S. Venkatachala, 1971 †
Genus Rugulidium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
Genus Ruvalia Volkova, 1999 † (uncertain, unassessed)
Genus Saccosphaera N. Baltes, 1969 †
Genus Sacculidium Ribecai, Raevskaya & Tongiorgi, 2002 †
Genus Safirotheca Vavrdová, 1989 †
Genus Sagatum Vavrdová & Bek, 2001 †
Genus Saharidia A. Combaz, 1968 †
Genus Saharifusa E.D. Pöthe de Baldis, 1997 †
Genus Salopidium K.J. Dorning, 1981 †
Genus Sangarella A.F. Fradkina & E.B. Pestchevitskaya in E.B. Pestchevitskaya & A.F. Fradkina, 2001 † (uncertain, unassessed)
Genus Satka T.V. Jankauskas, 1979 †
Genus Saturnus F.H. Cramer, 1966 †
Genus Savitrinia E. Nagy, 1966 †
Genus Scalariphycites Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
Genus Scalenadiacrodium T.L. Potter, B.E. Pedder & S. Feist-Burkhardt, 2012 †
Genus Scaphita Timofeev, 1973 ex Timofeev in Timofeev et al., 1976 †
Genus Scaphospinosa B.V. Timofeev in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
Genus Scheplelevia Aristova, 1971 †
Genus Schismatosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
Genus Schizocystia Cookson & Eisenack, 1962 †
Genus Schizodiacrodium G. Burmann, 1968 †
Genus Schizodiocrodium G. Burmann, 1968 † accepted as Schizodiacrodium G. Burmann, 1968 †
Genus Schizofusa Yan, 1983 †
Genus Schizospora Yan, 1995 † (uncertain, unassessed)
Genus Schizosporites † (uncertain, unassessed)
Genus Schizovalia Yan, 1985 †
Genus Schizovalvia Yan, 1985 † (uncertain, unassessed)
Genus Scuticabolus A.R. Loeblich III, 1967 †
Genus Senzeillea F. Stockmans & Y. Willière, 1969 †
Genus Sertulidium M. Quintavalle & G. Playford, 2006 †
Genus Shorikhosphaeridium Sergeev, 2001 † (uncertain, unassessed)
Genus Shuiyousphaeridium Yan in Yan & Zhu, 1992 †
Genus Sibiriella Z.K. Fajzulina in Z.A. Akulcheva et al., 1981 †
Genus Sicyomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
Genus Siderolappa G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Sigmopollis R.W. Hedlund, 1965 †
Genus Simia N.S. Mikhailova & T.V. Jankauskas in T.V. Jankauskas, 1989 †
Genus Simsangia S.K. Baksi, 1962 †
Genus Singraulipollenites V. Sinha, 1969 †
Genus Sinianella Yin, 1980 †
Genus Sirius M.A. Fombella Blanco, 1978 †
Genus Skiagia C. Downie, 1982 †
Genus Sol F.H. Cramer, 1964 †
Genus Solatisphaera E.R. Wicander & A.R. Loeblich Jr., 1977 †
Genus Solenophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
Genus Solisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
Genus Solita F.H. Cramer, 1970 † (uncertain, unassessed)
Genus Somphophragma Playford in Playford & Dring, 1981 †
Genus Somphosphaeridium Zang & Walter, 1992 †
Genus Sphaeroligotriletes † (uncertain, unassessed)
Genus Sphaeromorpha N. Baltes, 1969 †
Order Sphaeromorphitae †
Genus Sphaeroporalites D.O. Hemer & P.W. Nygreen, 1967 †
Genus Sphaerosomatites Rothpletz, 1880 †
Genus Spicadinium D.J. Batten & J.K. Lister, 1988 †
Genus Spinasphaera R.K. Kar & R.K. Saxena, 1976 †
Genus Spinatipolus Dodekova, 1983 † (uncertain, unassessed)
Genus Spinuliferites T.-C. Huang, 1981 †
Genus Spiromorpha Yin, Yuan, Meng & Hu, 2005 †
Genus Spongocystia K.L. Segroves, 1967 †
Genus Spumiosa S.N. Naumova, 1968 † (Not validly published)
Genus Spumiosina Lopukhin, 1966 †
Genus Spumosata Naumova †
Genus Spumosina S.N. Naumova, 1968 † (Not validly published)
Genus Spumososphaera Naumova †
Genus Spurimoyeria E.R. Wicander & A.R. Loeblich Jr., 1977 †
Genus Staplinites S.L. Van Landingham, 1965 † (uncertain, unassessed)
Genus Staplinium Jansonius, 1962 †
Genus Stellechinatum R.E. Turner, 1984 †
Genus Stelliferidium J. Deunff, H. Górka & R. Rauscher, 1974 †
Genus Stellinium S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
Genus Stelomorpha Yin, 1994 †
Genus Stemmatopila G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
Genus Stenomarginata † (uncertain, unassessed)
Genus Stenozonaletes † (uncertain, unassessed)
Genus Stenozonoaletes † (uncertain, unassessed)
Genus Stenozonoligotriletes Timofeev, 1958 †
Genus Stenozonoligotriletum † (uncertain, unassessed)
Genus Stephanodiacrodium Vavrdová, 1986 †
Genus Sticcasphaeridium Zang & Walter, 1992 †
Genus Stictosoma Wicander, Playford & Robertson, 1999 †
Genus Stictosphaeridium B.V. Timofeev, 1966 †
Genus Stictosphaeridium B.V. Timofeev, 1962 † (uncertain, unassessed)
Genus Strablosphaeridium H. Górka, 1980 †
Genus Stratimorphis E.A. Assejeva in P.L. Shulga, 1976 † (uncertain, unassessed)
Genus Striasphaera Liu in Gao, Xing & Liui, 1995 † (uncertain, unassessed)
Genus Striatostellula W.A.S. Sarjeant & Stancliffe, 1994 †
Genus Striatotheca G. Burmann, 1970 †
Genus Strophomorpha Miller & Eames, 1982 †
Genus Studenicia E.A. Assejeva in Yu.V. Teslenko, 1982 † (uncertain, unassessed)
Genus Stylodiniopsis A. Eisenack, 1954 †
Genus Sulcatosphaeridium S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 †
Genus Sulcusicystis Y.-H. Bai in Y.-H. Bai et al., 1983 †
Genus Svenkodinium Gedl, 1996 † accepted as Nannobarbophora Habib & Knapp, 1982 † (not validly published)
Genus Sylvanidium A.R. Loeblich Jr., 1970 †
Genus Symplassosphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
Genus Synsphaeridium Eisenack, 1965 †
Genus Synsphaeridium Timofeev, 1966 †
Genus Tabulimicrocystis Habib & Knapp, 1982 †
Genus Taeniosphaeridium Uutela & Tynni, 1991 †
Genus Talakania P.N. Kolosov, 1983 † (uncertain, unassessed)
Genus Talcheridium Tripathi, 1999 † (uncertain, unassessed)
Genus Tariccrodium P. Pittau, 1995 †
Genus Tchuja A.M. Stanevitch in V.V. Khomentovsky & V. Yu. Shenfil, 1986 † (uncertain, unassessed)
Genus Tectitheca G. Burmann, 1968 †
Genus Tectocorphidium Jiabo, 1978 †
Genus Tectocorpidium Jiabo, 1978 † (uncertain, unassessed)
Genus Tectosphaeridium Dufka, 1990 † (uncertain, unassessed)
Genus Teichertodinium S.A.J. Pocock & W.A.S. Sarjeant, 1972 †
Genus Temporina S.C.D. Sah & R.K. Kar, 1974 †
Genus Tenuirica Playford & Wicander, 1988 †
Genus Teophipolia V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 †
Genus Tessellaesphaera C.B. Foster, 1979 †
Genus Tetrabrachiophora A. Eisenack, 1954 †
Genus Tetradinium Vavrdová, 1973 † accepted as Tetraniveum Vavrdová, 1976 †
Genus Tetraedrixium B.V. Timofeev, 1973 †
Genus Tetraniveum Vavrdová, 1976 †
Genus Tetraporina S.N. Naumova, 1939 †
Genus Tetrasphaera B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
Genus Tetraveryhachium Stancliffe & Sarjeant, 1994 † (uncertain, unassessed)
Genus Thecatovalvia Yan, 1995 † (uncertain, unassessed)
Genus Thyalnum † (uncertain, unassessed)
Genus Thymadora Clendening & Wood, 1981 †
Genus Thysanoprobolus A.R. Loeblich Jr. & H. Tappan, 1970 †
Genus Tilosphaeridium † (uncertain, unassessed)
Genus Timanisphaera Vorob'eva, Sergeev & Knoll, 2009 †
Genus Timofeevia Vanguestaine, 1978 †
Genus Tinnajaphyton P.N. Kolosov, 1982 † (uncertain, unassessed)
Genus Tolonia P.N. Kolosov, 1983 † (uncertain, unassessed)
Genus Tongzia Li Jun, 1987 †
Genus Tophoporata Pykhova, 1973 †
Genus Torgia A.E. Grigorieva & P.N. Kolosov in T.V. Jankauskas, 1989 † (uncertain, unassessed)
Genus Tornacia F. Stockmans & Y. Willière, 1966 †
Genus Toroformis Lopukhin, 1972 †
Genus Trachyaletes Timofeev †
Genus Trachyarachnitum Andreeva, 1966 †
Genus Trachydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
Genus Trachydiscina Naumova †
Genus Trachyhystrichosphaera B.V. Timofeev & T.N. Hermann in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
Genus Trachymarginata S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 † (uncertain, unassessed)
Genus Trachyminuscula Naumova, 1961 †
Genus Trachyoligotriletes Timofeev, 1958 ex Timofeev, 1960 †
Genus Trachyoligotriletum † (uncertain, unassessed)
Genus Trachypsophosphaera Naumova, 1964 †
Genus Trachyrytidodiacrodium B.V. Timofeev, 1959 †
Genus Trachysphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
Genus Trachytriletes Naumova, 1939 †
Genus Trachyvalia Yan, 1995 † (uncertain, unassessed)
Genus Trachyzonodiacrodium B.V. Timofeev, 1959 † (uncertain, unassessed)
Genus Tranvikium Tynni, 1982 †
Genus Trematoligotriletum Timofeev, 1959 †
Genus Trematophora Eisenack, 1965 †
Genus Trematosphaeridium B.V. Timofeev, 1959 †
Genus Tresarcus Tropepi & Ribecai, 2000 †
Genus Tretopilula G.K. Colbath, 1990 †
Genus Tretosohyrtana G.K. Colbath, 1979 †
Genus Trialetes Naumova †
Genus Triangulina F.H. Cramer, 1964 †
Genus Triangulopsis H. Döring, 1961 † (uncertain, unassessed)
Genus Triangumorpha Xing & Liu, 1973 †
Genus Tribulidium M. Quintavalle & G. Playford, 2006 †
Genus Tricholigotriletum Timofeev, 1959 †
Genus Trichosphaeridium Timofeev, 1966 †
Genus Trilobatum Xiaosi Fang, 1987 †
Genus Triporina S.N. Naumova, 1939 †
Genus Tritonites N.G. Marshall & A.D. Partridge, 1988 † accepted as Paucilobimorpha J. de Coninck, 1986 †
Genus Truncatisphaeridium Riding & Duxbury, 1993 †
Genus Trunculumarium A.R. Loeblich Jr. & H. Tappan, 1976 †
Genus Tryannus † (uncertain, unassessed)
Genus Tubulifera Schumacker-Lambry, 1978 †
Genus Tubulosphaera Palacios in Palacios & Moczydlowska, 1998 †
Genus Tubulospina R.J. Davey, 1970 †
Genus Tunisphaeridium J. Deunff & Evitt, 1968 †
Genus Turuchanica Rudavskaya, 1964 †
marine, terrestrial
fossil only
Evitt, W. R. (1963). A discussion and proposals concerning fossil dinoflagellates, hystrichospheres, and acritarchs, II. <em>Proceedings of the National Academy of Sciences of the United States of America.</em> 49(3): 298-302., available online at http://www.pnas.org/content/49/3/298.short
page(s): 300 [details]   
Taxonomic remark "Group" (treated in IRMNG as a phylum) established by Evitt (1963) for organic-walled microfossils with a central cavity,...  
Taxonomic remark "Group" (treated in IRMNG as a phylum) established by Evitt (1963) for organic-walled microfossils with a central cavity, not demonstrably related to known groups e.g. dinoflagellates; probably represents cysts of unicellular algae/protists in the main along with perhaps "eggs, cysts, and mature tests of assorted one celled and higher organisms" (Evitt, 1963), with a long geological history. According to convention and in line with Evitt's original proposal, acritarchs are treated according to the botanical nomenclatural Code (ICNafp). [details]
IRMNG (2021). Acritarcha †. Accessed at: https://www.irmng.org/aphia.php?p=taxdetails&id=123 on 2021-12-07
Date
action
by
2010-05-31 22:00:00Z
created
2011-12-31 23:00:00Z
changed
2017-03-18 09:45:17Z
changed

original description Evitt, W. R. (1963). A discussion and proposals concerning fossil dinoflagellates, hystrichospheres, and acritarchs, II. <em>Proceedings of the National Academy of Sciences of the United States of America.</em> 49(3): 298-302., available online at http://www.pnas.org/content/49/3/298.short
page(s): 300 [details]   

additional source Montenari, M.; Leppig, U. (2003). Die Acritarcha: ihre Klassifikation, Morphologie, Ultrastruktur und paläoökologische/paläogeographische Verbreitung [The Acritarcha: their classification morphology, ultrastructure and palaeoecological/palaeogeographical distribution]. <em>Paläontologische Zeitschrift.</em> 77(1): 173-193., available online at https://doi.org/10.1007/bf03004567 [details]   

additional source Martin, F. (1993). Acritarchs: a review. <em>Biological Reviews.</em> 68(4): 475-537., available online at https://doi.org/10.1111/j.1469-185x.1993.tb01241.x [details]   

extant flag source Evitt, W. R. (1963). A discussion and proposals concerning fossil dinoflagellates, hystrichospheres, and acritarchs, II. <em>Proceedings of the National Academy of Sciences of the United States of America.</em> 49(3): 298-302., available online at http://www.pnas.org/content/49/3/298.short [details]   

habitat flag source web search (AJR) [details]   
From other sources
Taxonomic remark "Group" (treated in IRMNG as a phylum) established by Evitt (1963) for organic-walled microfossils with a central cavity, not demonstrably related to known groups e.g. dinoflagellates; probably represents cysts of unicellular algae/protists in the main along with perhaps "eggs, cysts, and mature tests of assorted one celled and higher organisms" (Evitt, 1963), with a long geological history. According to convention and in line with Evitt's original proposal, acritarchs are treated according to the botanical nomenclatural Code (ICNafp). [details]

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