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IRMNG taxon details

Acritarcha †

123  (urn:lsid:irmng.org:taxname:123)

Evitt, 1963
accepted
Phylum
Leiofusidae Eisenack, 1938 † · unaccepted (unrecognised family)

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  1. Genus Abacum M.A. Fombella, 1978 †
  2. Genus Acanspthominuscula Pykhova, 1966 †
  3. Genus Acanthodiacrodium B.V. Timofeev, 1958 †
  4. Genus Acantholigotriletes Alyushinskii, Kirichenko & Timofeev, 1957 †
  5. Genus Acantholigotriletum Timofeev, 1959 †
  6. Genus Acanthomarginata S.N. Naumova ex N.I. Umnova in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
  7. Order Acanthomorphitae †
  8. Genus Acanthopsophosphaera Naumova, 1964 †
  9. Genus Acanthorytidodiacrodium Timofeev, 1959 †
  10. Genus Acanthozonodiacrodium Timofeev, 1959 †
  11. Genus Acriora E.R. Wicander, 1974 †
  12. Genus Acrosphaeridium Uutela & Tynni, 1991 †
  13. Genus Acrum M.A. Fombella Blanco, 1977 †
  14. Genus Actinotodissus A.R. Loeblich Jr. & H. Tappan, 1978 †
  15. Genus Actinotophasis A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  16. Genus Actipilion A.R. Loeblich Jr., 1970 †
  17. Genus Adara M.A. Fombella Blanco, 1977 †
  18. Genus Adarve M.A. Fombella Blanco, 1977 †
  19. Genus Adorfia G. Burmann, 1970 †
  20. Genus Adornofusa A.R. Loeblich Jr. & H. Tappan, 1978 †
  21. Genus Aducta Z.K. Fajzulina in Z.A. Akulcheva et al., 1981 †
  22. Genus Akmanella T. Ivanova, 2009 †
  23. Genus Akomachra G.K. Colbath, 1979 †
  24. Genus Aldridgeisphaera Kozur, 1986 †
  25. Genus Alicesphaeridium Zang in Zang & Walter, 1992 †
  26. Genus Alisum H. Górka, 1965 †
  27. Genus Alliumella E.K. Vanderflit in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
  28. Genus Alocomurus Playford in Playford & Dring, 1981 †
  29. Genus Alveosphaera V.V. Kirjanov, 1978 †
  30. Genus Amadeusphaeridium Zang & Walter, 1992 †
  31. Genus Ammonidium T.R. Lister, 1970 †
  32. Genus Amphitheca Vavrdova & Svobodova, 2010 †
  33. Genus Ampullula E. Righi, 1991 †
  34. Genus Amsdenium G. Playford & R. Wicander, 2006 †
  35. Genus Ancilicula G. Claus & B. Nagy, 1962 †
  36. Genus Ancorosphaeridium Sergeev, Knoll & Vorob'eva, 2011 †
  37. Genus Angularia S.R. Samoilovitch ex G. Norris & W.A.S. Sarjeant, 1965 †
  38. Genus Angulisphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  39. Genus Anguloplanina V.A. Rudavskaja in T.F. Vozzhennikova & B.V. Timofeev, 1973 †
  40. Genus Ankyrotrochos Vecoli, 1999 †
  41. Genus Annulatopsophosphaera N.G. Pychova in A.Y. Rozanov et al., 1969 †
  42. Genus Annulodiscus M. Hajós, 1966 †
  43. Genus Annulum M.A. Fombella Blanco, 1978 †
  44. Genus Anomaloplaisium H. Tappan & A.R. Loeblich Jr., 1972 †
  45. Genus Anomaloplaisum H. Tappan & A.R. Loeblich Jr., 1971 †
  46. Genus Anshania Ou-yang, 1979 †
  47. Genus Anthatractus J. Deunff, 1954 †
  48. Genus Antrodibrachium G.K. Colbath, 1990 †
  49. Genus Antrosphaera He, 1984 †
  50. Genus Apodastoides Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  51. Genus Aprioschadon A.R. Loeblich Jr. & H. Tappan, 1976 †
  52. Genus Arabisphaera D.O. Hemer & P.W. Nygreen, 1967 †
  53. Genus Aranidium T.V. Jankauskas, 1975 †
  54. Genus Arbusculidium J. Deunff, 1968 †
  55. Genus Archaealetes Naumova, 1950 †
  56. Genus Archaeochytosa Eisenack †
  57. Genus Archaeoconcentrica Naumova †
  58. Genus Archaeodinium O. Shu, 1979 †
  59. Genus Archaeodiscina S.N. Naumova, 1960 †
  60. Genus Archaeofavosina S.N. Naumova, 1960 †
  61. Genus Archaeohystrichosphaeridium Timofeev, 1959 ex Loeblich & Tappan, 1976 †
  62. Genus Archaeosacculina Pykhova, 1967 †
  63. Genus Archaeospirulina Stanevich, 2009 †
  64. Genus Arcosphaeridium Uutela & Tynni, 1991 †
  65. Genus Aremoricanium J. Deunff, 1955 †
  66. Genus Arkonia G. Burmann, 1970 †
  67. Genus Arkonites Legault, 1973 †
  68. Genus Artemisiocysta P.N. von Benedek, 1972 †
  69. Genus Aryballomorpha F. Martin & L.-M. Yin, 1988 †
  70. Genus Ascostomocystis Drugg & A.R. Loeblich Jr., 1967 †
  71. Genus Asketopalla A.R. Loeblich Jr. & H. Tappan, 1969 †
  72. Genus Asperatopsophosphaera D.A. Schepeleva ex E.A. Assejeva in P.L. Shulga, 1976 †
  73. Genus Asseserium M. Nagovitsin & K.E. Moczydłowska, 2012 †
  74. Genus Asteridium M. Moczydlowska, 1991 †
  75. Genus Asteriscus Kowalski, 1983 †
  76. Genus Asterocapsoides L.M. Yin & Z.P. Li, 1978 †
  77. Genus Athabascaella Martin, 1984 †
  78. Genus Attritasporites Combaz, 1967 †
  79. Genus Aureosphaera F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  80. Genus Aureotesta M. Vavrdová, 1972 †
  81. Genus Auritusphaera Strother, 2008 †
  82. Genus Avalonella Wauthoz & Dorning, 2001 †
  83. Genus Axisphaeridium Eisenack, 1967 †
  84. Genus Bacillidinium Habib & Knapp, 1982 †
  85. Genus Bacisphaeridium A. Eisenack, 1962 †
  86. Genus Baculatireticulatus T.K. Al-Ameri, 1984 †
  87. Genus Bailikania A.A. Trestshetenkova in Z.A. Akulcheva et al., 1981 †
  88. Genus Baltisphaera G. Burmann, 1970 †
  89. Genus Baltisphaeridium Eisenack, 1958 †
  90. Genus Baltisphaerosum R.E. Turner, 1984 †
  91. Genus Bambuites Sommer, 1971 †
  92. Genus Barakella F.H. Cramer & M. del Carmen R. Díez, 1977 †
  93. Genus Barathrisphaeridium E.R. Wicander, 1974 †
  94. Genus Barbestiastra W.A.S. Sarjeant & Stancliffe, 1994 †
  95. Genus Bartenia R. Helby, 1987 †
  96. Genus Bavlinella E.D. Shepeleva, 1962 †
  97. Genus Beringiella J.P. Bujak, 1984 †
  98. Genus Beromia Vavrdová, 1986 †
  99. Genus Biannulatisphaerities Neville in Neves et al., 1973 †
  100. Genus Bimerga Wood, 1995 †
  101. Genus Bipatellifera C. Singh, 1983 †
  102. Genus Bisballatum Fang, 1986? †
  103. Genus Bisbullatum X. Fang, 1987 †
  104. Genus Bispinosphaera P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  105. Genus Bojasphaera G.K. Colbath, 1990 †
  106. Genus Bothroligotriletes Timofeev, 1958 †
  107. Genus Brachiprojectidium Habib & Knapp, 1982 †
  108. Genus Bresca M.A. Fombella Blanco, 1978 †
  109. Genus Brestovia L.T. Paskeviciené, 1980 †
  110. Genus Briareus A.H. Knoll, 1992 †
  111. Genus Brochopsophosphaera E.D. Shepeleva in E.D. Shepeleva & B.V. Timofeev, 1963 †
  112. Genus Bubomorpha Yin in Chen, Qian, Lin, Zhang, Wang, Yin & Erdtmann, 1985 †
  113. Genus Buchinia N.A. Volkova, 1990 †
  114. Genus Buedingiisphaeridium Schaarschmidt, 1963 †
  115. Genus Bullatosphaera Vorob'eva, Sergeev & Knoll, 2009 †
  116. Genus Caelatosphaera Wicander, Playford & Robertson, 1999 †
  117. Genus Caldariola Molyneux in Molyneux & Rushton, 1988 †
  118. Genus Calyxia Willman, 2008 †
  119. Genus Calyxiella I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
  120. Genus Campenia K. Mädler, 1963 †
  121. Genus Candelasphaeridium J. Deunff, 1978 †
  122. Genus Cantabrica F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  123. Genus Carinatosphaeridium Eiserhardt, 1984 †
  124. Genus Carminella F.H. Cramer, 1968 †
  125. Genus Casiopea M.A. Fombella Blanco, 1978 †
  126. Genus Catillopsis W.S. Drugg, 1970 †
  127. Genus Caudatopsophosphaera Pykhova †
  128. Genus Caulissoma R. Wicander & G. Playford, 2021 †
  129. Genus Celtiberium M.A. Fombella Blanco, 1977 †
  130. Genus Centrasphaeridium R. Wicander & G. Playford, 1985 †
  131. Genus Cephalia S.C.D. Sah & R.K. Kar, 1974 †
  132. Genus Cepillum F.H. Cramer, 1964 †
  133. Genus Ceratocystidiopsis G. Deflandre, 1938 †
  134. Genus Ceratophyton V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 †
  135. Genus Cerebrosphaera Butterfield in Butterfield, Knoll & Swett, 1994 †
  136. Genus Cerionopora Y. Zhang & X.-L. Yuan, 1992 †
  137. Genus Chabiosphaera K. Drábek, 1972 †
  138. Genus Chalaziosphaeridium W.A.S. Sarjeant & Stancliffe, 1994 †
  139. Genus Cheilofilum Butterfield, 2005 †
  140. Genus Cheleutochroa A.R. Loeblich Jr. & H. Tappan, 1978 †
  141. Genus Chlamydosphaeridia A. Eisenack, 1971 †
  142. Genus Chuttecloska A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  143. Genus Circinatisphaera Miller, 1987 †
  144. Genus Cirrifera I.C. Cookson & A. Eisenack, 1960 †
  145. Genus Clavaticystis Habib & Knapp, 1982 †
  146. Genus Cleithronetrum A.R. Loeblich Jr. & H. Tappan, 1978 †
  147. Genus Closteromorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  148. Genus Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 †
  149. Genus Collumosphaera K.P. Jain & S.K. Dutta in S.K. Dutta & K.P. Jain, 1980 †
  150. Genus Collyngbya N. Wang, 1989 †
  151. Genus Comasphaeridium Staplin, 1965 †
  152. Genus Comptaluta H. Tappan & A.R. Loeblich Jr., 1972 †
  153. Genus Conaticystis Habib & Knapp, 1982 †
  154. Genus Concavaesphaera Liu, Yin, Pan, Shen, Dong & Li, 2023 †
  155. Genus Concentrites B.S. Venkatachala et al., 1974 †
  156. Genus Conglutinatosphaeridium Timofeev, 1965 †
  157. Genus Conradidium F. Stockmans & Y. Willière, 1969 †
  158. Genus Constrictosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  159. Genus Cooksonella E. Nagy, 1965 †
  160. Genus Cordobesia E.D. Pöthe de Baldis, 1977 †
  161. Genus Cornplanktona S.C.D. Sah & R.K. Kar, 1974 †
  162. Genus Cornuferifusa Jacobson & Achab, 1985 †
  163. Genus Cornutosphaera Sin, 1973 †
  164. Genus Corollasphaeridium Dean & Martin, 1982 †
  165. Genus Coronitesta Uutela & Tynni, 1991 †
  166. Genus Coronopsis O. Wetzel, 1961 †
  167. Genus Corrugasphaera R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
  168. Genus Coryphidium M. Vavrdová, 1972 †
  169. Genus Costataplicata C. Downie, 1974 †
  170. Genus Costatilobus G. Playford, 1977 †
  171. Genus Costatosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  172. Genus Crameria T.R. Lister, 1970 †
  173. Genus Crassiangulina S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  174. Genus Crassifusa Rodriguez-Gonzalez, 1983 †
  175. Genus Crassisphaeridium E.R. Wicander, 1974 †
  176. Genus Craterisphaeridium J. Deunff, 1981 †
  177. Genus Creberlumectum R. Harland & W.A.S. Sarjeant, 1970 †
  178. Genus Crinita Vorob'eva, Sergeev & Knoll, 2009 †
  179. Genus Cristallinium Vanguestaine, 1978 †
  180. Genus Crucida Ottone, 1996 †
  181. Genus Crucigenites P. Palik, 1966 †
  182. Genus Cryptosphaera S.C.D. Sah & R.K. Kar, 1974 †
  183. Genus Cryptostromatium Moreau-Benoît, 1974 †
  184. Genus Cuatrifolia F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  185. Genus Cucumifora Mikhailova, 1986 †
  186. Genus Cupritia B. Courtinat in B. Courtinat & C. Gaillard, 1980 †
  187. Genus Cyclodictyon I.C. Cookson & A. Eisenack, 1958 †
  188. Genus Cycloposphaeridium Uutela & Tynni, 1991 †
  189. Genus Cyclopsiella Drugg & A.R. Loeblich Jr., 1967 †
  190. Genus Cymatiogalea J. Deunff, 1961 †
  191. Genus Cymatiomorpha W.C. Elsik & D.L. Dilcher, 1974 †
  192. Genus Cymatiosphaeroides Knoll, 1984 †
  193. Genus Cymbosphaeridium T.R. Lister, 1970 †
  194. Genus Cystidiopsis E. Nagy, 1965 †
  195. Genus Dactylofusa Brito & Santos, 1965 †
  196. Genus Daedalosphaera C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  197. Genus Daillydium F. Stockmans & Y. Willière, 1969 †
  198. Genus Dasydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
  199. Genus Dasydorus G. Playford & F. Martin, 1984 †
  200. Genus Dasypilula A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  201. Genus Dasyrytidodiacrodium Timofeev, 1959 †
  202. Genus Dasysphaeridium Zang & Walter, 1992 †
  203. Genus Dateriocradus H. Tappan & A.R. Loeblich Jr., 1972 †
  204. Genus Deltoidina Jiabo, 1978 †
  205. Genus Deltotosoma Playford in Playford & Dring, 1981 †
  206. Genus Demorhethium A.R. Loeblich, Jr. & E.R. Wicander, 1974 †
  207. Genus Densisphaera M. Nagovitsin & K.E. Moczydłowska, 2012 †
  208. Genus Deunffia C. Downie, 1960 †
  209. Genus Deusilites D.O. Hemer & P.W. Nygreen, 1967 †
  210. Genus Devisphaera Q. Tang, N.C. Hughes, N.R. McKenzie, P.M. Myrow & S. Xiao, 2017 †
  211. Genus Diacrocanthidium G. Deflandre & J.-C. Foucher, 1967 †
  212. Order Diacromorphitae †
  213. Genus Diaphorochroa E.R. Wicander, 1974 †
  214. Genus Dichotisphaera R.E. Turner, 1984 †
  215. Genus Dichozonata V.V. Kirjanov, 1978 †
  216. Genus Dicommopalla A.R. Loeblich Jr., 1970 †
  217. Genus Dicrodiacrodium G. Burmann, 1968 †
  218. Genus Dictyochroa H. Górka, 1965 †
  219. Genus Dictyopsophosphaera Naumova, 1964 †
  220. Genus Dictyosphaeridium B.V. Timofeev, 1969 †
  221. Genus Dictyosphaeridium W. Wetzel, 1952 †
  222. Genus Dicyclopyla N. Wang, 1989 †
  223. Genus Diexallophasis A.R. Loeblich Jr., 1970 †
  224. Genus Dilatisphaera T.R. Lister, 1970 †
  225. Genus Dimastigobolus G. Deflandre, 1936 †
  226. Genus Diornatosphaera C. Downie, 1958 †
  227. Genus Diplofusa I.C. Cookson & A. Eisenack, 1960 †
  228. Genus Diplomembrana Yan, 1985 †
  229. Genus Discoidella D. Habib, 1970 †
  230. Genus Disnella L.T. Paskeviciené, 1980 †
  231. Genus Disparifusa A.R. Loeblich Jr., 1970 †
  232. Genus Distosphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  233. Genus Divietipellis E.R. Wicander, 1974 †
  234. Genus Domasia C. Downie, 1960 †
  235. Genus Domasiella Eisenack, 1969 †
  236. Genus Dominopolia V.V. Kirjanov, 1974 †
  237. Genus Dongyesphaera L. Yin, F. Meng, F. Kong & C. Niu, 2020 †
  238. Genus Dorsennidium E.R. Wicander, 1974 †
  239. Genus Downiea E.D. Pöthe de Baldis, 1975 †
  240. Genus Dudleyia Eisenack, 1978 †
  241. Genus Duospinosphaera Q. Ye, J. Li, J. Tong, Z. An, J. Hu & S. Xiao, 2022 †
  242. Genus Dupliciradiatum González, Moreno & Playford, 2005 †
  243. Genus Duplicisphaeridium H. Górka, 1980 †
  244. Genus Duplisphaera M. Moczydlowska, 1998 †
  245. Genus Echinosphaeridium A.H. Knoll, 1992 †
  246. Genus Ecmelostoiba E.R. Wicander, 1974 †
  247. Genus Ecthymabrachion E.R. Wicander, 1974 †
  248. Genus Ecthymapalla A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  249. Genus Ectypolopus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  250. Genus Eisenackidium F.H. Cramer & M. del C. Díez de Cramer, 1968 †
  251. Genus Elektoriskos A.R. Loeblich Jr., 1970 †
  252. Genus Elenia Volkova, 1984 †
  253. Genus Eliasum M.A. Fombella Blanco, 1977 †
  254. Genus Ellipsaletes F.H. Cramer, 1966 †
  255. Genus Enigmadinium Wrenn & Hart, 1988 †
  256. Genus Enneadikosocheia G.K. Colbath, 1979 †
  257. Genus Enretisphaeridium Ou-yang, Yin & Li, 1974 †
  258. Genus Eomarginata T.V. Jankauskas, 1979 †
  259. Genus Eotintinnopsis Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  260. Genus Eotylotopalla L.M. Yin, 1987 †
  261. Genus Ephelopalla E.R. Wicander, 1974 †
  262. Genus Epicephalopyxis G. Deflandre, 1938 †
  263. Genus Eponula Vavrdová, 1986 †
  264. Genus Ericanthea F.H. Cramer & M. del Carmen R. Díez, 1977 †
  265. Genus Ericiasphaera G. Vidal, 1990 †
  266. Genus Estiastra A. Eisenack, 1959 †
  267. Genus Estrella P. Liu & M. Moczydłowska, 2019 †
  268. Genus Ethmosphaeridium Timofeev, 1971 †
  269. Genus Eupoikilofusa F.H. Cramer, 1970 †
  270. Genus Evittia I.M. Brito, 1966 †
  271. Genus Excultibrachium A.R. Loeblich Jr. & H. Tappan, 1978 †
  272. Genus Exochoderma E.R. Wicander, 1974 †
  273. Genus Eyrea I.C. Cookson & A. Eisenack, 1970 †
  274. Genus Fatkia Vavrdová, 1994 †
  275. Genus Favososphaeridium B.V. Timofeev, 1966 †
  276. Genus Ferromia M. Vavrdová in V. Pokorný, 1979 †
  277. Genus Filisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  278. Genus Fimbriaglomerella A.R. Loeblich Jr. & Drugg, 1968 †
  279. Genus Flammulasphaera Richards & Mullins, 2003 †
  280. Genus Florisphaeridium T.R. Lister, 1970 †
  281. Genus Focusphaera Padilha de Quadros, 1986 †
  282. Genus Foliomorpha Yan, 1985 †
  283. Genus Foveofusa K.M. Lele & A. Chandra, 1972 †
  284. Genus Fractoricoronula G.K. Colbath, 1979 †
  285. Genus Frankea G. Burmann, 1970 †
  286. Genus Fromea Cookson & Eisenack, 1958 †
  287. Genus Fuchunshania Sin & Liu, 1978 †
  288. Genus Fulgisphaeridium J. Deunff, 1980 †
  289. Genus Galeasphaeridium Vorob'eva, Sergeev & Knoll, 2009 †
  290. Genus Geron F.H. Cramer, 1966 †
  291. Genus Gigadiacrodium Z. Szczepanik, T. Servais & A. Żylińska, 2017 †
  292. Genus Glaucotesta Vavrdová, 1982 †
  293. Genus Globosphaeridium M. Moczydlowska, 1991 †
  294. Genus Globosum White, 1844 †
  295. Genus Globulaesphaeridium R.S. Tiwari & A.A. Moiz, 1971 †
  296. Genus Gloecapsamorphites Ou-yang, Yin & Li, 1974 †
  297. Genus Glottimorpha Timofeev, 1966 †
  298. Genus Gneudnaella Playford in Playford & Dring, 1981 †
  299. Genus Gomphosphaeridium Gao, 1988 †
  300. Genus Goniolopadion G. Playford, 1977 †
  301. Genus Goniomorpha Yin, 1986 †
  302. Genus Goniosphaeridium Eisenack, 1969 †
  303. Genus Gordonirundum E.G. Raevskaya & T. Servais, 2017 †
  304. Genus Gorgonisphaeridium Staplin, 1965 †
  305. Genus Gorynielaa Timofeev, 1973 †
  306. Genus Gouhousphaeridium Yang in Yang et al., 1980 †
  307. Genus Gracilisphaeridium A. Eisenack & Cramer in Eisenack et al., 1973 †
  308. Genus Granitunica P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  309. Genus Granomarginata S.N. Naumova, 1960 †
  310. Genus Granopsophosphaera Naumova, 1964 †
  311. Genus Granularia Kowalski, 1983 †
  312. Genus Gregalocapsa N. Wang, 1989 †
  313. Genus Guttatisphaeridium E.R. Wicander, 1974 †
  314. Genus Gyalorhethium A.R. Loeblich Jr. & H. Tappan, 1978 †
  315. Genus Gyalosphaeridium Zang & Walter, 1992 †
  316. Genus Gyratosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  317. Genus Halodinium J.P. Bujak, 1984 †
  318. Genus Halophoridia I.C. Cookson & A. Eisenack, 1962 †
  319. Genus Haplocystia K.L. Segroves, 1967 †
  320. Genus Hapsidopalla G. Playford, 1977 †
  321. Genus Helios F.H. Cramer, 1964 †
  322. Genus Heliospermopsis E. Nagy, 1965 †
  323. Genus Heliosphaeridium M. Moczydlowska, 1991 †
  324. Genus Heloriopodum Servais & Molyneux, 1997 †
  325. Genus Helosphaeridium T.R. Lister, 1970 †
  326. Genus Hemibaltisphaeridium F.H. Cramer, 1970 †
  327. Genus Hemideunffia B. Thusu, 1973 †
  328. Genus Hercyniana Burmann, 1976 †
  329. Genus Herisphaera C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  330. Order Herkomorphitae †
  331. Genus Heteromorphidion A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  332. Genus Hidasia E. Nagy, 1965 †
  333. Genus Histopalla Playford in Playford & Dring, 1981 †
  334. Genus Hocosphaeridium Zang & Walter, 1992 †
  335. Genus Hoegklintia K.J. Dorning, 1981 †
  336. Genus Holothuriadeigma A.R. Loeblich Jr., 1970 †
  337. Genus Hubeisphaera Sin & Liu, 1978 †
  338. Genus Hungardiscus Krivan-Hutter, 1963 †
  339. Genus Hyalinsphaeridia Bernier & Courtinat, 1979 †
  340. Genus Hymenodiscina Naumova, 1964 †
  341. Genus Hymenophacoides Roblot, 1967 †
  342. Genus Hyrtellosphaeridium Naumova †
  343. Genus Hystrichoangulatum Wilson & Hoffmeister in Downie & Sarjeant, 1965 †
  344. Genus Hystrichocorpulentum Willson & Hoffmeister in Downie & Sarjeant, 1965 †
  345. Genus Hystrichotriangulatum Andreeva, 1966 †
  346. Genus Iberosphaeridium F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  347. Genus Impluviculus A.R. Loeblich Jr & H. Tappan, 1969 †
  348. Genus Incurvatina S.N. Naumova & N.I. Umnova in N.I. Umnova, 1975 †
  349. Genus Inderites S.A. Abramova & O.F. Marchenko, 1964 †
  350. Genus Indigestosphaeridium Zang & Walter, 1992 †
  351. Genus Induoglobus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  352. Genus Introvertocystis C.M. Mays & J.D. Stilwell, 2012 †
  353. Genus Involusphaeridium P. Filipiak et al., 2020 †
  354. Genus Iroistella J. Deunff, 1980 †
  355. Genus Izhoria I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
  356. Genus Jandiatubaites Padilha de Quadros, 1986 †
  357. Genus Jilinella L.M. Yin, 1987 †
  358. Genus Joehvisphaera Uutela & Tynni, 1991 †
  359. Genus Joviella Matsuoka & Bujak, 1988 †
  360. Genus Jubatasphaera A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  361. Genus Kakabekia E.S. Barghoorn in E.S. Barghoorn & S.A. Tyler, 1965 †
  362. Genus Keltmia Vorob'eva, Sergeev & Knoll, 2009 †
  363. Genus Kildinella B.V. Timofeev in E.D. Shepeleva & B.V. Timofeev, 1963 †
  364. Genus Kildinosphaera Vidal in Vidal & Siedlecka, 1983 †
  365. Genus Kladosphaeridium Vavrdová, 1990 †
  366. Genus Kladothecidium Vavrdová, 1986 †
  367. Genus Knollisphaeridium Willman & Moczydowska, 2008 †
  368. Genus Konderia A.F. Weiss, 1983 †
  369. Genus Korojonia I.C. Cookson & A. Eisenack, 1958 †
  370. Genus Krimodiscus Aristova, 1971 †
  371. Genus Kundasphaera Uutela, 1989 ex Uutela & Tynni, 1991 †
  372. Genus Labyrinthosphaeridium Uutela & Tynni, 1991 †
  373. Genus Lacunalites D.O. Hemer & P.W. Nygreen, 1967 †
  374. Genus Lacunopsophosphaera N.G. Pychova in A.Y. Rozanov et al., 1969 †
  375. Genus Lacunosphaeridium Uutela & Tynni, 1991 †
  376. Genus Ladogella I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
  377. Genus Laminasphaera P. Liu & M. Moczydłowska, 2019 †
  378. Genus Lancettopsis K. Mädler, 1963 †
  379. Genus Lanveocia J. Deunff, 1978 †
  380. Genus Latoporata S.N. Naumova & N.I. Umnova in N.I. Umnova, 1975 †
  381. Genus Lavradosphaera De Schepper & Head, 2008 †
  382. Genus Leioaletes Timofeev, 1955 †
  383. Genus Leioarachnitum Andreeva, 1966 †
  384. Genus Leiofusa A. Eisenack, 1938 †
  385. Genus Leiofusidium T.V. Jankauskas, 1982 †
  386. Genus Leioligotriletes Timofeev, 1958 †
  387. Genus Leioplanktona R.K. Kar & R.K. Saxena, 1976 †
  388. Family Leiosphaeridaceae Timofeev, 1956 †
  389. Genus Leiosphaeridia A. Eisenack, 1958 †
  390. Genus Leiosphaeridium F.L. Staplin, 1961 †
  391. Genus Leiovalia Eisenack, 1965 †
  392. Genus Leoniella F.H. Cramer, 1964 †
  393. Genus Leprotolypa G.K. Colbath, 1979 †
  394. Genus Leptobrachion K.J. Dorning, 1981 †
  395. Genus Liepaina Jankauskas & Volkova in Volkova, Kirjanov, Piskun, Paskeviciene & Jankauskas, 1979 †
  396. Genus Likropalla G.K. Colbath, 1979 †
  397. Genus Liliosphaeridium Uutela & Tynni, 1991 †
  398. Genus Limaites Padilha de Quadros, 1986 †
  399. Genus Limbicysta Marshall, 1989 †
  400. Genus Linotolypa Eisenack, 1962 †
  401. Genus Liulaobeinella Yan, 1982 †
  402. Genus Liulaobeisphaera Q. Yang et al., 1980 †
  403. Genus Lobomorpha Yan, 1985 †
  404. Genus Lobotheca Vavrdová, 1986 †
  405. Genus Loeblichia Playford & Wicander, 1988 †
  406. Genus Lomatolopas Playford in Playford & Dring, 1981 †
  407. Genus Lontohystrichosphaera B.J. Slater, T.H.P. Harvey & N.J. Butterfield, 2018 †
  408. Genus Lophodiacrodium B.V. Timofeev, 1958 †
  409. Genus Lophodictyotidium S.A.J. Pocock, 1972 †
  410. Genus Lopholigotriletes Alyushinskii et al., 1957 †
  411. Genus Lopholiotriletum Timofeev, 1959 †
  412. Genus Lophomarginata Pychova, 1969 †
  413. Genus Lophorytidodiacrodium B.V. Timofeev, 1958 †
  414. Genus Lophosphaeridium B.V. Timofeev ex C. Downie, 1963 †
  415. Genus Lophozonodiacrodium Timofeev, 1959 †
  416. Genus Lua F. Martin & L.-M. Yin, 1988 †
  417. Genus Lunataforma M.A. Miller, M. Vecoli & C. Cesari, 2017 †
  418. Genus Lunulidia A. Eisenack, 1958 †
  419. Genus Lusatia G. Burmann, 1970 †
  420. Genus Luscinasphaera Wicander & Wood, 1997 †
  421. Genus Lusitanium Elaouad-Debbaj, 1981 †
  422. Genus Macroptycha Timofeev, 1973 ex Timofeev et al., 1976 †
  423. Genus Maculatasporites R.S. Tiwari, 1964 †
  424. Genus Maranhites I.M. Brito, 1965 †
  425. Genus Margominuscula S.N. Naumova ex T.V. Jankauskas, 1989 †
  426. Genus Marrocanium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
  427. Genus Martinsphaeridium W.A.S. Sarjeant & Vavrdová, 1997 †
  428. Genus Mastigophycus F.-X. Wang & Y.-Y. Zhai, 1982 †
  429. Genus Matanomadhia R.K. Kar & R.K. Saxena, 1976 †
  430. Genus Mathurosphaera C.P. Varma & A.K. Dangwal, 1964 †
  431. Genus Matulamorha F. Wang, G. Zhou & Q. Chen, 1980 †
  432. Genus Matulamorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  433. Genus Mecsekia M. Hajós, 1966 †
  434. Genus Medousapalla Wood & Clendening, 1982 †
  435. Genus Megapolybessurus Vorob'eva, Sergeev & Knoll, 2009 †
  436. Genus Mehlisphaeridium K.L. Segroves, 1967 †
  437. Genus Membranites Al-Ruwaili, 2000 †
  438. Genus Membranolimbus V.S. Maljavkina ex G. Norris & W.A.S. Sarjeant, 1965 †
  439. Genus Membranosphaera P. Liu & M. Moczydłowska, 2019 †
  440. Genus Membrosphaera Eiserhardt, 1991 †
  441. Genus Mengeosphaera S. Xiao, C. Zhou, P. Liu, D. Wang & X. Yuan, 2014 †
  442. Genus Menneria A.S. Lopuchin, 1971 †
  443. Genus Meridinium Vavrdová, 1989 †
  444. Genus Metaridium Riding, Matthews, Miles & Wolfard, 1998 †
  445. Genus Miaplacidus M.A. Fombella Blanco, 1978 †
  446. Genus Micrhystridium Deflandre, 1938 †
  447. Genus Microagglomeratus Awramik in Allison & Awramik, 1989 †
  448. Genus Microancyratium Habib & Knapp, 1982 †
  449. Genus Microbaculidinium Habib & Knapp, 1982 †
  450. Genus Microfasta Morgan, 1975 †
  451. Genus Microvalia Tynni & Uutela, 1984 †
  452. Genus Minutissima Naumova in Naumova & Pavlovski, 1961 †
  453. Genus Mirificysta J.-X. Yu, 1982 †
  454. Genus Mispertonia D. McLean, D.J. Bodman, P. Lucas & J.L. Pendleton, 2018 †
  455. Genus Mitroporata A.S. Lopuchin in M.I. Neustadt, 1966 †
  456. Genus Monocrodium P. Pittau, 1985 †
  457. Genus Monosozosphaeridium Zang & Walter, 1992 †
  458. Genus Monotrematosphaeridium Sin, 1962 †
  459. Genus Monotrematum Timofeev, 1960 †
  460. Genus Morcoa M. del Carmen R. Díez & F.H. Cramer, 1977 †
  461. Genus Multifronsphaeridium Zang & Walter, 1992 †
  462. Genus Multiplicisphaeridium F.L. Staplin, 1961 †
  463. Genus Mutabilisphaera Zang in Gravestock et al., 2001 †
  464. Genus Mycteroligotriletes Timofeev, 1958 †
  465. Genus Naevisphaeridium E.R. Wicander, 1974 †
  466. Genus Nannobarbophora Habib & Knapp, 1982 †
  467. Genus Nanocyclopia A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  468. Genus Narcarvonia M.E. Dettmann & G. Playford, 1994 †
  469. Genus Navifusa A. Combaz, F.W. Lange & J. Pansart, 1967 †
  470. Genus Nellia I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
  471. Genus Neoastrion Viswanathiah, Venkatachalapathy & Mahalakshmamma, 1979 †
  472. Order Netromorphitae †
  473. Genus Nevidia M. Vavrdová, 1966 †
  474. Genus Nexosarium R.E. Turner, 1984 †
  475. Genus Ninadiacrodium Raevskaya & Servais, 2009 †
  476. Genus Nirundella E.G. Raevskaya & T. Servais, 2017 †
  477. Genus Nodosus Hagenfeldt, 1989 †
  478. Genus Nodusosphaeridium Uutela, 1989 †
  479. Genus Nollia Eisenack, 1979 †
  480. Genus Nothooidium A.R. Loeblich Jr. & H. Tappan, 1976 †
  481. Genus Nucellohystrichosphaera B.V. Timofeev & T.N. Hermann in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
  482. Genus Nucellosphaeridium B.V. Timofeev, 1966 †
  483. Genus Nummus Morgan, 1975 †
  484. Genus Nunatsiaquus C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  485. Genus Ocridoligotriletes Timofeev, 1958 †
  486. Genus Ocridosphaeridium Timofeev, 1973 †
  487. Genus Octaedryxium V.A. Rudavskaja in T.F. Vozzhennikova & B.V. Timofeev, 1973 †
  488. Genus Octaplata S.C.D. Sah & R.K. Kar, 1974 †
  489. Genus Octoedryxium Rudavskaja, 1973 †
  490. Genus Octogonium Martin, 1973 †
  491. Genus Odontomorpha M. Hajós, 1966 †
  492. Genus Odontothrix Habib & Knapp, 1982 †
  493. Genus Okridoligotriletes Alyushinskii et al., 1957 †
  494. Genus Olenekus Stanevich, 2009 †
  495. Genus Oligopogonium A.R. Loeblich Jr. & H. Tappan, 1976 †
  496. Genus Ollula F. Góczán, 1962 †
  497. Genus Onondagella F.H. Cramer, 1966 †
  498. Genus Ooidium B.V. Timofeev, 1957 †
  499. Genus Operculites K.R. Newman, 1965 †
  500. Genus Oppilatala A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  501. Genus Ordovicidium H. Tappan & A.R. Loeblich Jr., 1972 †
  502. Genus Ornatasphaera R.K. Saxena, A. Chandra & M.G.A.P. Setty, 1982 †
  503. Genus Orthosphaeridium Eisenack, 1968 †
  504. Genus Orygmatosphaeridium B.V. Timofeev, 1959 †
  505. Genus Oshania F. Wang, G. Zhou & Q. Chen, 1980 †
  506. Genus Ostiumsphaeridium Vorob'eva, Sergeev & Knoll, 2009 †
  507. Genus Oudhkusumites N.C. Srivastava, 1967 †
  508. Genus Ovalisacculina Naumova †
  509. Genus Ovnia F.H. Cramer & M. del Carmen R. Díez, 1977 †
  510. Genus Ovulum T.V. Jankauskas, 1975 †
  511. Genus Ovum A. Eisenack, 1931 †
  512. Genus Ovumella De Wever & O'Dogherty, 2006 †
  513. Genus Ozotobrachion Loeblich Jr. & Drugg, 1968 †
  514. Genus Pachysphaeridium G. Burmann, 1970 †
  515. Genus Palacanthus E.R. Wicander, 1974 †
  516. Genus Palaeasphaeridium Yin †
  517. Genus Palaeobion O. Wetzel, 1961 †
  518. Genus Palaeocladophora Eklund, 1990 †
  519. Genus Palaeoharpastum R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
  520. Genus Palaeohystrichosphaeridium Eiserhardt, 1986 †
  521. Genus Palaeomonostroma Eklund, 1990 †
  522. Genus Palaeostomocystis Deflandre, 1935 †
  523. Genus Palaeovolvox Zang & Walter, 1992 †
  524. Genus Palaiosphaeridium H. Górka, 1980 †
  525. Genus Palanaea S.C.D. Sah & R.K. Kar, 1974 †
  526. Genus Paleasphaeridium C.-Y. Yin, 1985 †
  527. Genus Paleopedicystus F.L. Staplin, 1961 †
  528. Genus Paniculaferum M.A. Miller, 1991 †
  529. Genus Papilliferum L.M. Yin, 1987 †
  530. Genus Papillomembrana N. Spjeldnaes, 1963 †
  531. Genus Papinochium Ters & Deflandre, 1966 †
  532. Genus Papulogabata Playford in Playford & Dring, 1981 †
  533. Genus Paralecaniella I.C. Cookson & A. Eisenack, 1970 †
  534. Genus Pardaminela M. del Carmen R. Díez & F.H. Cramer, 1977 †
  535. Genus Passalosphaera Playford & Wicander, 1988 †
  536. Genus Peramorpha Martin in Martin & Dean, 1983 †
  537. Genus Percultisphaera T.R. Lister, 1970 †
  538. Genus Peregrinixia Habib & Knapp, 1982 †
  539. Genus Perforela M. del Carmen R. Díez & F.H. Cramer, 1977 †
  540. Genus Perissolagonella A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  541. Genus Pertusidisca M.A. Miller, M. Vecoli & C. Cesari, 2017 †
  542. Genus Pertusisphaeridium Turner, 1986 †
  543. Genus Petaloferidium S.R. Jacobson, 1978 †
  544. Genus Peteinosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  545. Genus Petrovina S. Loboziak, J.H.G. Melo, L.P. Quadros & M. Streel, 1997 †
  546. Genus Phenacoon Vecoli & Playford, 1997 †
  547. Genus Pheoclosterium H. Tappan & A.R. Loeblich Jr., 1972 †
  548. Genus Phoenisphaeridium J. Deunff in Eisenack et al., 1976 †
  549. Genus Picostella F.H. Cramer, B. Allam, W.H. Kanes & M. del C.R. Díez, 1974 †
  550. Genus Pictonicopila G. Deflandre & M. Ters, 1966 †
  551. Genus Piliferosphaera A.R. Loeblich Jr., 1970 †
  552. Genus Piperodinium Mudie in Scott, Mudie, Vilks & Younger, 1984 †
  553. Genus Pirea M. Vavrdová, 1972 †
  554. Genus Plagasphaera L.-M. Yin, K. Wang, Z. Shen & Y.-L. Zhao, 2021 †
  555. Genus Planctonites W. Krutzsch, 1977 †
  556. Genus Platycystidia I.C. Cookson & A. Eisenack, 1960 †
  557. Genus Plicatofusa L.I. Sheshegova, 1984 †
  558. Genus Plicatosphaera Potter in Baudelot & Gery, 1979 †
  559. Genus Plicatosphaeridium Butterfield, 2005 †
  560. Genus Podoliella B.V. Timofeev, 1973 †
  561. Genus Poikilofusa Staplin, 1965 †
  562. Genus Polonosphaeridium H. Górka, 1987 †
  563. Genus Polyancistrodorus A.R. Loeblich Jr. & H. Tappan, 1969 †
  564. Genus Polydeunffia F.H. Cramer, 1970 †
  565. Genus Polyedrina Padilha de Quadros, 1986 †
  566. Genus Polyedrosphaeridium B.V. Timofeev, 1966 †
  567. Genus Polyedryxium J. Deunff, 1954 †
  568. Genus Polyforama Naumova in Pykhova, 1969 †
  569. Genus Polygoniomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  570. Genus Polygonium M. Vavrdová, 1966 †
  571. Order Polygonomorphitae †
  572. Genus Polyhedrosphaeridium Zang & Walter, 1992 †
  573. Genus Polynucella Xing & Liu, 1973 †
  574. Genus Polyplanifer F.H. Cramer, 1964 †
  575. Genus Polyporata Pykhova, 1966 †
  576. Genus Porusphaera Jiabo, 1978 †
  577. Genus Praedermocarpites Ou-yang, Yin & Li, 1974 †
  578. Genus Pratulasphaera R. Wicander & G. Playford, 1985 †
  579. Genus Priscogalea Deunff, 1961 †
  580. Genus Priscotheca J. Deunff, 1961 †
  581. Genus Prismatocystis D. Habib, 1969 †
  582. Order Prismatomorphitae †
  583. Genus Prolixosphaeridiopsis Hogg & Bailey, 1997 †
  584. Genus Proteolobus Wood, 1997 †
  585. Genus Protoleiosphaeridium B.V. Timofeev ex B.V. Timofeev, 1960 †
  586. Genus Protolophosphaeridium B.V. Timofeev, 1963 †
  587. Genus Protomassulina S.N. Naumova, 1968 †
  588. Genus Protomycterosphaeridium B.V. Timofeev, 1963 †
  589. Genus Protonucellosphaeridium Timofeev, 1963 †
  590. Genus Protoocridosphaeridium B.V. Timofeev, 1962 †
  591. Genus Protosphaeridium Timofeev, 1966 †
  592. Genus Prototrachysphaeridium B.V. Timofeev, 1963 †
  593. Genus Prototylosphaeridium Timofeev, 1963 †
  594. Genus Protovavososphaeridium Timofeev, 1963 †
  595. Genus Protozonosphaeridium Timofeev, 1963 †
  596. Genus Psenotopus H. Tappan & A.R. Loeblich Jr., 1972 †
  597. Genus Pseudodiacrodium Sin & Liu, 1978 †
  598. Genus Pseudofavososphaera Xing, 1982 †
  599. Genus Pseudofromea D. Burger, 1980 †
  600. Genus Pseudolunulidia Brito & Santos, 1965 †
  601. Genus Pseudomasia J. De Coninck, 1969 †
  602. Genus Pseudotasmanites V.V. Kirjanov, 1974 †
  603. Genus Pseudozonosphaera Xing & Liu, 1973 †
  604. Genus Pseudozonosphaeridium Andreeva, 1966 †
  605. Genus Psilosphaera S.C.D. Sah & R.K. Kar, 1974 †
  606. Genus Pterocystidiopsis G. Deflandre, 1938 †
  607. Genus Pteroidea L.I. Sheshegova, 1975 †
  608. Order Pteromorphitae †
  609. Genus Pterospermopsimorpha B.V. Timofeev, 1966 †
  610. Genus Pterotosphaerula F.H. Cramer, 1966 †
  611. Genus Pulvinosphaeridium A. Eisenack, 1954 †
  612. Genus Pustulisphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  613. Genus Pustulisphaeridium E.R. Wicander, 1974 †
  614. Genus Puteoscortum E.R. Wicander & A.R. Loeblich Jr., 1977 †
  615. Genus Pylantios M. Quintavalle & G. Playford, 2006 †
  616. Genus Pytinomorpha Playford & Wicander, 1988 †
  617. Genus Quadraditum F.H. Cramer, 1964 †
  618. Genus Quadrina J.P. Bujak in J.P. Bujak, C. Downie, G.L. Eaton & G.L. Williams, 1980 †
  619. Genus Quadruilobus H. Tappan & A.R. Loeblich Jr., 1972 †
  620. Genus Quantostrobilium W.A.S. Sarjeant & Stancliffe, 1996 †
  621. Genus Quisquilites L.R. Wilson & J.B. Urban, 1963 †
  622. Genus Radialetes G. Playford, 1963 †
  623. Genus Raphesphaera N.A. Volkova, 1990 †
  624. Genus Raplasphaera Uutela & Tynni, 1991 †
  625. Genus Recticystis Schrank, 2003 †
  626. Genus Retialetes F.L. Staplin, 1960 †
  627. Genus Reticulatopora N. Wang, 1989 †
  628. Genus Retisphaeridium Staplin, 1965 †
  629. Genus Revinotesta M. Vanguestaine, 1974 †
  630. Genus Rhachosoarium H. Tappan & A.R. Loeblich Jr., 1972 †
  631. Genus Rhacobrachion K.J. Dorning, 1981 †
  632. Genus Rhaetosphaeridium W.A.S. Sarjeant & Vavrdová, 1997 †
  633. Genus Rhiptosocherma A.R. Loeblich Jr. & H. Tappan, 1978 †
  634. Genus Rhombodella I.C. Cookson & A. Eisenack, 1962 †
  635. Genus Rhopaliophora H. Tappan & A.R. Loeblich Jr., 1972 †
  636. Genus Riculasphaera A.R. Loeblich Jr. & Drugg, 1968 †
  637. Genus Rimosicysta Marshall, 1989 †
  638. Genus Rudniana Gol †
  639. Genus Rugasphaera Jiabo, 1978 †
  640. Genus Rugidinium S.A.J. Pocock & W.A.S. Sarjeant in S.A.J. Pocock, 1972 †
  641. Genus Rugosoopsis B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
  642. Genus Rugosopsophosphaera Naumova, 1964 †
  643. Genus Rugulasphaeridium D.C. Bharadwaj, R.S. Tiwari & B.S. Venkatachala, 1971 †
  644. Genus Rugulidium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
  645. Genus Saccosphaera N. Baltes, 1969 †
  646. Genus Sacculidium Ribecai, Raevskaya & Tongiorgi, 2002 †
  647. Genus Safirotheca Vavrdová, 1989 †
  648. Genus Sagatum Vavrdová & Bek, 2001 †
  649. Genus Saharidia A. Combaz, 1968 †
  650. Genus Saharifusa E.D. Pöthe de Baldis, 1997 †
  651. Genus Salopidium K.J. Dorning, 1981 †
  652. Genus Sanduina N. Wang, 1989 †
  653. Genus Satka T.V. Jankauskas, 1979 †
  654. Genus Saturnus F.H. Cramer, 1966 †
  655. Genus Savitrinia E. Nagy, 1966 †
  656. Genus Scalenadiacrodium T.L. Potter, B.E. Pedder & S. Feist-Burkhardt, 2012 †
  657. Genus Scaphita Timofeev, 1973 ex Timofeev in Timofeev et al., 1976 †
  658. Genus Scaphospinosa B.V. Timofeev in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
  659. Genus Scheplelevia Aristova, 1971 †
  660. Genus Schismatosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  661. Genus Schizocystia Cookson & Eisenack, 1962 †
  662. Genus Schizodiacrodium G. Burmann, 1968 †
  663. Genus Schizofusa Yan, 1983 †
  664. Genus Schizovalia Yan, 1985 †
  665. Genus Scuticabolus A.R. Loeblich III, 1967 †
  666. Genus Senzeillea F. Stockmans & Y. Willière, 1969 †
  667. Genus Sertulidium M. Quintavalle & G. Playford, 2006 †
  668. Genus Sibiriella Z.K. Fajzulina in Z.A. Akulcheva et al., 1981 †
  669. Genus Sicyomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  670. Genus Sigmopollis R.W. Hedlund, 1965 †
  671. Genus Simia N.S. Mikhailova & T.V. Jankauskas in T.V. Jankauskas, 1989 †
  672. Genus Simsangia S.K. Baksi, 1962 †
  673. Genus Singraulipollenites V. Sinha, 1969 †
  674. Genus Sinianella Yin, 1980 †
  675. Genus Sinosphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  676. Genus Sirius M.A. Fombella Blanco, 1978 †
  677. Genus Skiagia C. Downie, 1982 †
  678. Genus Sol F.H. Cramer, 1964 †
  679. Genus Solatisphaera E.R. Wicander & A.R. Loeblich Jr., 1977 †
  680. Genus Solisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  681. Genus Somphophragma Playford in Playford & Dring, 1981 †
  682. Genus Somphosphaeridium Zang & Walter, 1992 †
  683. Genus Sphaeromorpha N. Baltes, 1969 †
  684. Order Sphaeromorphitae †
  685. Genus Sphaeroporalites D.O. Hemer & P.W. Nygreen, 1967 †
  686. Genus Sphaerosomatites Rothpletz, 1880 †
  687. Genus Spicadinium D.J. Batten & J.K. Lister, 1988 †
  688. Genus Spinasphaera R.K. Kar & R.K. Saxena, 1976 †
  689. Genus Spinuliferites T.-C. Huang, 1981 †
  690. Genus Spiromorpha Yin, Yuan, Meng & Hu, 2005 †
  691. Genus Spongocystia K.L. Segroves, 1967 †
  692. Genus Spumiosina Lopukhin, 1966 †
  693. Genus Spumosata Naumova †
  694. Genus Spumososphaera Naumova †
  695. Genus Spurimoyeria E.R. Wicander & A.R. Loeblich Jr., 1977 †
  696. Genus Staplinium Jansonius, 1962 †
  697. Genus Stellarossica V.G. Vorob'eva & V.N. Sergeev, 2018 †
  698. Genus Stellechinatum R.E. Turner, 1984 †
  699. Genus Stelliferidium J. Deunff, H. Górka & R. Rauscher, 1974 †
  700. Genus Stellinium S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  701. Genus Stelomorpha Yin, 1994 †
  702. Genus Stenozonoligotriletes Timofeev, 1958 †
  703. Genus Stephanodiacrodium Vavrdová, 1986 †
  704. Genus Sticcasphaeridium Zang & Walter, 1992 †
  705. Genus Stictosoma Wicander, Playford & Robertson, 1999 †
  706. Genus Stictosphaeridium B.V. Timofeev, 1966 †
  707. Genus Strablosphaeridium H. Górka, 1980 †
  708. Genus Striatostellula W.A.S. Sarjeant & Stancliffe, 1994 †
  709. Genus Striatotheca G. Burmann, 1970 †
  710. Genus Stylodiniopsis A. Eisenack, 1954 †
  711. Genus Sulcatosphaeridium S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 †
  712. Genus Sulcusicystis Y.-H. Bai in Y.-H. Bai et al., 1983 †
  713. Genus Sylvanidium A.R. Loeblich Jr., 1970 †
  714. Genus Symplassosphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
  715. Genus Synsphaeridium Eisenack, 1965 †
  716. Genus Synsphaeridium Timofeev, 1966 †
  717. Genus Tabulimicrocystis Habib & Knapp, 1982 †
  718. Genus Taeniosphaeridium Uutela & Tynni, 1991 †
  719. Genus Tariccrodium P. Pittau, 1995 †
  720. Genus Tectitheca G. Burmann, 1968 †
  721. Genus Tectocorphidium Jiabo, 1978 †
  722. Genus Teichertodinium S.A.J. Pocock & W.A.S. Sarjeant, 1972 †
  723. Genus Teleostomata M. Kondas, P. Filipiak & P. Breuer, 2022 †
  724. Genus Temporina S.C.D. Sah & R.K. Kar, 1974 †
  725. Genus Tenuirica Playford & Wicander, 1988 †
  726. Genus Teophipolia V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 †
  727. Genus Tessellaesphaera C.B. Foster, 1979 †
  728. Genus Tetrabrachiophora A. Eisenack, 1954 †
  729. Genus Tetraedrixium B.V. Timofeev, 1973 †
  730. Genus Tetraniveum Vavrdová, 1976 †
  731. Genus Tetraporina S.N. Naumova, 1939 †
  732. Genus Thymadora Clendening & Wood, 1981 †
  733. Genus Thysanoprobolus A.R. Loeblich Jr. & H. Tappan, 1970 †
  734. Genus Tianzhushania L.M. Yin & Z.P. Li, 1978 †
  735. Genus Timanisphaera Vorob'eva, Sergeev & Knoll, 2009 †
  736. Genus Timofeevia Vanguestaine, 1978 †
  737. Genus Tongzia Li, 1987 †
  738. Genus Tophoporata Pykhova, 1973 †
  739. Genus Tornacia F. Stockmans & Y. Willière, 1966 †
  740. Genus Toroformis Lopukhin, 1972 †
  741. Genus Trachyaletes Timofeev †
  742. Genus Trachyarachnitum Andreeva, 1966 †
  743. Genus Trachydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
  744. Genus Trachydiscina Naumova †
  745. Genus Trachyhystrichosphaera B.V. Timofeev & T.N. Hermann in B.V. Timofeev, T.N. Hermann & N.S. Mikhailova, 1976 †
  746. Genus Trachyminuscula Naumova, 1961 †
  747. Genus Trachyoligotriletes Timofeev, 1958 ex Timofeev, 1960 †
  748. Genus Trachypsophosphaera Naumova, 1964 †
  749. Genus Trachyrytidodiacrodium B.V. Timofeev, 1959 †
  750. Genus Trachysphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
  751. Genus Trachytriletes Naumova, 1939 †
  752. Genus Tranvikium Tynni, 1982 †
  753. Genus Trematoligotriletum Timofeev, 1959 †
  754. Genus Trematophora Eisenack, 1965 †
  755. Genus Trematosphaeridium B.V. Timofeev, 1959 †
  756. Genus Tresarcus Tropepi & Ribecai, 2000 †
  757. Genus Tretopilula G.K. Colbath, 1990 †
  758. Genus Tretosohyrtana G.K. Colbath, 1979 †
  759. Genus Trialetes Naumova †
  760. Genus Triangulina F.H. Cramer, 1964 †
  761. Genus Triangumorpha Xing & Liu, 1973 †
  762. Genus Tribulidium M. Quintavalle & G. Playford, 2006 †
  763. Genus Tricholigotriletum Timofeev, 1959 †
  764. Genus Trichosphaeridium Timofeev, 1966 †
  765. Genus Trilobatum X. Fang, 1987 †
  766. Genus Triporina S.N. Naumova, 1939 †
  767. Genus Truncatisphaeridium Riding & Duxbury, 1993 †
  768. Genus Trunculumarium A.R. Loeblich Jr. & H. Tappan, 1976 †
  769. Genus Tuberculum E.Y. Golubkov, I.M. Bobrovskiy, E.A. Kushim & Y.V. Plotkina, 2021 †
  770. Genus Tubulifera Schumacker-Lambry, 1978 †
  771. Genus Tubulosphaera Palacios in Palacios & Moczydlowska, 1998 †
  772. Genus Tubulospina R.J. Davey, 1970 †
  773. Genus Tunisphaeridium J. Deunff & Evitt, 1968 †
  774. Genus Turuchanica Rudavskaya, 1964 †
  775. Genus Tyloligotriletum Timofeev, 1959 †
  776. Genus Tylosphaeridium Timofeev, 1966 †
  777. Genus Tylotopalla A.R. Loeblich Jr., 1970 †
  778. Genus Tyrannus Wood & Tekbali, 1987 †
  779. Genus Ulanisphaeridium A. McMinn, 1982 †
  780. Genus Umbellasphaeridium S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  781. Genus Uncinisphaera E.R. Wicander, 1974 †
  782. Genus Unellium R. Rauscher, 1969 †
  783. Genus Uniferata Naumova †
  784. Genus Uniporata Naumova in Pykhova, 1969 †
  785. Genus Uranidium Jacobson & Achab, 1985 †
  786. Genus Urasphaera M. Nagovitsin & K.E. Moczydłowska, 2012 †
  787. Genus Valeria T.V. Jankauskas, 1982 †
  788. Genus Valvimorpha Yan, 1985 †
  789. Genus Vandalosphaeridium Vidal, 1981 †
  790. Genus Vanguestainidium Steemans, Javaux, Breuer, Le Hérissé, Marshall & De Ville De Goyet, 2009 †
  791. Genus Variomargosphaeridium Zang & Walter, 1992 †
  792. Genus Vavososphaeridium B.V. Timofeev, 1959 †
  793. Genus Vavrodella A.R. Loeblich Jr. & H. Tappan, 1976 †
  794. Genus Velatasphaera Miller & Williams, 1988 †
  795. Genus Veliferites I.M. Brito, 1966 †
  796. Genus Ventilabrumorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  797. Genus Vermiculatisphaera Miller & Eames, 1982 †
  798. Genus Verrucidium Habib & Knapp, 1982 †
  799. Genus Verrucosphaera H. Górka, 1970 †
  800. Genus Verrucosphaera P. Liu & M. Moczydłowska, 2019 †
  801. Genus Veryhachium J. Deunff, 1954 †
  802. Genus Vesiculosphaerina Lopukhin, 1966 †
  803. Genus Villosacapsula A.R. Loeblich Jr. & H. Tappan, 1976 †
  804. Genus Visbysphaera T.R. Lister, 1970 †
  805. Genus Vogtlandia G. Burmann, 1970 †
  806. Genus Volkovia C. Downie, 1982 †
  807. Genus Vologdovia Shepeleva in Klevtsova & Shepeleva, 1980 †
  808. Genus Vulcanisphaera J. Deunff, 1961 †
  809. Genus Waaslandia De Schepper, Head & Louwye, 2004 †
  810. Genus Weissiella Vorob'eva, Sergeev & Knoll, 2009 †
  811. Genus Wicanderidium W.A.S. Sarjeant & Vavrdová, 1997 †
  812. Genus Wilsonastrum Jansonius, 1962 †
  813. Genus Winwaloeusia J. Deunff, 1977 †
  814. Genus Wrensnestia K.J. Dorning, 1981 †
  815. Genus Wujiangella Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  816. Genus Wuroia L.E. Stover & R. Helby, 1987 †
  817. Genus Xanthocysta R.L. Ravn & D.K. Goodman, 2017 †
  818. Genus Yalisphaeridium L. Gao, 1986 †
  819. Genus Yichangia L.M. Yin, 1987 †
  820. Genus Yinia N. Wang, 1989 †
  821. Genus Yinitianzhushania S. Xiao, C. Zhou, P. Liu, D. Wang & X. Yuan, 2014 †
  822. Genus Yonyangella Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  823. Genus Yukonosphaeridium Awramik in Allison & Awramik, 1989 †
  824. Genus Yurtusia Dong, Xiao, Shen, Zhou, Li & Yao, 2009 †
  825. Genus Yushengia P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  826. Genus Zonooidium B.V. Timofeev, 1957 †
  827. Genus Zonosphaeridium B.V. Timofeev ex B.V. Timofeev, 1973 †
  828. Genus Baiomeniscus A.R. Loeblich Jr., 1970 † (uncertain > nomen dubium)
  829. Genus Chamaesiphonites P. Palik, 1966 † (uncertain > nomen dubium)
  830. Genus Eomicrhystridium G. Deflandre, 1968 † (uncertain > nomen dubium)
  831. Genus Metaleiofusa D. Wall, 1965 † (uncertain > nomen dubium)
  832. Genus Neoveryhachium F.H. Cramer, 1970 † (uncertain > nomen dubium)
  833. Genus Palhistiodinia G. Deflandre, 1939 † (uncertain > nomen dubium, type specimen unidentifiable)
  834. Genus Phormidites P. Palik, 1966 † (uncertain > nomen dubium)
  835. Genus Fulopia E. Nagy, 1965 † (unaccepted > nomen nudum)
  836. Genus Acanthosphaera S.N. Naumova, 1968 † (Not validly published)
  837. Genus Annularia B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
  838. Genus Aquadulcum R. Harland & W.A.S. Sarjeant, 1970 † accepted as Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 † (synonym)
  839. Genus Archaeomassulina S.N. Naumova, 1968 † (Not validly published)
  840. Genus Archaeopertusina S.N. Naumova, 1960 † (Not validly published)
  841. Genus Archaeopsophosphaera S.N. Naumova, 1968 † (Not validly published)
  842. 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 †
  843. Genus Armstrongisphaera Kozur, 1986 † accepted as Papinochium Ters & Deflandre, 1966 †
  844. Genus Carnarvonia I.C. Cookson & A. Eisenack, 1982 † accepted as Narcarvonia M.E. Dettmann & G. Playford, 1994 †
  845. Genus Chamosphaera G.C. Geng, 1985 † (Not validly published)
  846. Genus Cingulosphaeridium A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
  847. Genus Deflandridium E. Nagy, 1969 † accepted as Planctonites W. Krutzsch, 1977 † (synonym)
  848. Genus Dilatiphaera T.R. Lister, 1970 † accepted as Dilatisphaera T.R. Lister, 1970 † (misspelling in Nomen. Zool./Zoological Record)
  849. Genus Ellipticoporata A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
  850. Genus Fueloepia E. Nagy, 1965 † accepted as Fulopia E. Nagy, 1965 †
  851. Genus Fülöpia E. Nagy, 1965 † accepted as Fulopia E. Nagy, 1965 †
  852. Genus Fusicoccus K.E. Nagovitsin, 2000 † (Not validly published)
  853. Genus Gemma V.A. Luchinina in I.T. Zhuravleva et al., 1982 † (Not validly published)
  854. Genus Gorgonosphaeridium † accepted as Gorgonisphaeridium Staplin, 1965 † (misspelling)
  855. Genus Hystrichosphaeridium S.N. Naumova, 1968 † (Not validly published)
  856. Genus Jilinella Yin, 1984 † (Not validly published (?))
  857. Genus Lecithodinium Habib & Knapp, 1982 † accepted as Micrhystridium Deflandre, 1938 † (currently accepted as subgenus)
  858. Genus Leiodiscina S.N. Naumova, 1968 † (Not validly published)
  859. Family Leiofusidae Eisenack, 1938 † accepted as Acritarcha † (unrecognised family)
  860. Genus Leiomarginata S.N. Naumova, 1960 † (Not validly published)
  861. Genus Leiominuscula S.N. Naumova, 1960 † (Not validly published)
  862. Genus Leiopsophosphaera S.N. Naumova, 1968 † (Not validly published)
  863. Genus Lophominuscula S.N. Naumova, 1960 † (Not validly published)
  864. Genus Mamillara S.N. Naumova, 1968 † (Not validly published)
  865. Genus Margoporina S.N. Naumova, 1968 † (Not validly published)
  866. Genus Margopylomina S.N. Naumova, 1968 † (Not validly published)
  867. Genus Megasacculina S.N. Naumova, 1960 † (Not validly published)
  868. Genus Micrhystridium S.N. Naumova, 1968 † (Not validly published)
  869. Genus Microconcentrica S.N. Naumova, 1960 † (Not validly published)
  870. Genus Neofentonia Özdikmen, 2009 † accepted as Limbicysta Marshall, 1989 †
  871. Genus Ophiobolus Wetzel, 1933 †
  872. Genus Orycmatosphaeridium B.V. Timofeev, 1959 † accepted as Orygmatosphaeridium B.V. Timofeev, 1959 †
  873. Genus Oscillatorites P. Palik, 1966 †
  874. Genus Ova † accepted as Ovum A. Eisenack, 1931 †
  875. Genus Paulcilobimorpha J. de Coninck, 1986 † accepted as Paucilobimorpha J. de Coninck, 1986 †
  876. Genus Protoarchaeosacculina S.N. Naumova, 1960 † (Not validly published)
  877. Genus Pseudomaranhites L.P. Quadros, 1996 † accepted as Maranhites I.M. Brito, 1965 † (synonym)
  878. Genus Pterrovericatus T.K. Al-Ameri, 1984 † accepted as Pteroverricatus T.K. Al-Ameri, 1984 †
  879. Genus Rifeniata S.N. Naumova, 1968 † (Not validly published)
  880. Genus Rifenita S.N. Naumova, 1968 † (Not validly published)
  881. 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 †
  882. Genus Schizodiocrodium G. Burmann, 1968 † accepted as Schizodiacrodium G. Burmann, 1968 †
  883. Genus Spumiosa S.N. Naumova, 1968 † (Not validly published)
  884. Genus Spumosina S.N. Naumova, 1968 † (Not validly published)
  885. Genus Svenkodinium Gedl, 1996 † accepted as Nannobarbophora Habib & Knapp, 1982 † (not validly published)
  886. Genus Tetradinium Vavrdová, 1973 † accepted as Tetraniveum Vavrdová, 1976 †
  887. Genus Tetrasphaera B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
  888. Genus Tritonites N.G. Marshall & A.D. Partridge, 1988 † accepted as Paucilobimorpha J. de Coninck, 1986 †
  889. Genus Vavosphaeridium † accepted as Vavososphaeridium B.V. Timofeev, 1959 † (misspelling)
  890. Genus Vavrdovella A.R. Loeblich Jr. & H. Tappan, 1976 † accepted as Tetraniveum Vavrdová, 1976 †
  891. Genus Vesiculosphaera I.A. Siverzeva & N.A. Volkova in N.A. Volkova & I.A. Siverzeva, 1991 †
  892. Genus Acanthomesotriletes † (uncertain, unassessed)
  893. Genus Acanthotractus † (uncertain, unassessed)
  894. Genus Agidelia † (uncertain, unassessed)
  895. Genus Algella † (uncertain, unassessed)
  896. Genus Alicespaeridium Zang & Walter, 1992 † (uncertain, unassessed)
  897. Genus Amoeboidium B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 † (uncertain, unassessed)
  898. Genus Amphithetochitina A.M. Obut & N.M. Zaslavskaya in N.M. Zaslavskaya, A.M. Obut & N.V. Sennikov, 1984 † (uncertain, unassessed)
  899. Genus Angiospora † (uncertain, unassessed)
  900. Genus Antruejadina F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 † (uncertain, unassessed)
  901. Genus Apectosphaeridium Turner, 1991 † (uncertain, unassessed)
  902. Genus Aphetospora † (uncertain, unassessed)
  903. Genus Apollinarisphaera G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
  904. Genus Apophoreta G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
  905. Genus Ascidiomorpha Yan, 1995 † (uncertain, unassessed)
  906. Genus Asteromorpha Xing in Xing, Ding, Luo, He & Wang, 1984 † (uncertain, unassessed)
  907. Genus Asyncosmium Turner, 1991 † (uncertain, unassessed)
  908. Genus Bacatisphaera Zhou, Brasier & Xue, 2001 † (uncertain, unassessed)
  909. Genus Bothroligotriletum † (uncertain, unassessed)
  910. Genus Bothrotrachytriletes † (uncertain, unassessed)
  911. Genus Bothrotriletes † (uncertain, unassessed)
  912. Genus Brocholaminaria Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
  913. Genus Brochos Vanderflit & Mikhailova, 1992 † (uncertain, unassessed)
  914. Genus Brochosaccus † (uncertain, unassessed)
  915. Genus Caelestites F.L. Staplin, 1962 † (uncertain, unassessed)
  916. Genus Caiacorymbifer H. Tappan & A.R. Loeblich Jr., 1972 † (uncertain, unassessed)
  917. Genus Careliella B.V. Timofeev, 1982 † (uncertain, unassessed)
  918. Genus Carnavonia I.C. Cookson & A. Eisenack, 1982 † (uncertain, unassessed)
  919. Genus Castaneasphaera Zhou, Brasier & Xue, 2001 † (uncertain, unassessed)
  920. Genus Cavaspina M. Moczydlowska, G. Vidal & V.A. Rudavskaja, 1993 † (uncertain, unassessed)
  921. Genus Centrum A.M. Stanevitch in V.V. Khomentovsky & V. Yu. Shenfil, 1986 † (uncertain, unassessed)
  922. Genus Cerastum Turner, 1991 † (uncertain, unassessed)
  923. Genus Characiosimilis P. Palik, 1966 † (uncertain, unassessed)
  924. Genus Chlorococcites P. Palik, 1966 † (uncertain, unassessed)
  925. Genus Circumiella E.A. Assejeva, 1974 † (uncertain, unassessed)
  926. Genus Cithariplana Srivastava, 1984 † (uncertain, unassessed)
  927. Genus Clausiella P. Palik, 1966 † (uncertain, unassessed)
  928. Genus Clausisphaera F.L. Staplin, 1962 † (uncertain, unassessed)
  929. Genus Clausites S.L. Van Landingham, 1965 † (uncertain, unassessed)
  930. Genus Clavata A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
  931. Genus Contextus † (uncertain, unassessed)
  932. Genus Corvasphaeridium † (uncertain, unassessed)
  933. Genus Costatiplicata † (uncertain, unassessed)
  934. Genus Crassicorium Buick & Knoll, 1999 † (uncertain, unassessed)
  935. Genus Crassosphaerea I.C. Cookson & S. Manum, 1960 † (uncertain, unassessed)
  936. Genus Crucidia Ottone, 1996 † (uncertain, unassessed)
  937. Genus Cucumiforma Mikhailova, 1986 † (uncertain, unassessed)
  938. Genus Cypandinia Herman in Herman & Podkovyrov, 2002 † (uncertain, unassessed)
  939. Genus Cyratosphaerina † (uncertain, unassessed)
  940. Genus Cyrcumiella † (uncertain, unassessed)
  941. Genus Dactyliotheca G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
  942. Genus Daidaphore G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
  943. Genus Decahedrella Manum, 1997 † (uncertain, unassessed)
  944. Genus Deltoidinia Jiabo, 1978 † (uncertain, unassessed)
  945. Genus Dichasphaera † (uncertain, unassessed)
  946. Genus Dicrospinasphaera X. Yuan & H.J. Hofmann, 1998 † (uncertain, unassessed)
  947. Genus Dictyotidia A.M. Stanevitch in T.V. Jankauskas, 1989 † (uncertain, unassessed)
  948. Genus Discacerra G. Claus & B. Nagy, 1962 † (uncertain, unassessed)
  949. Genus Discina Naumova, 1960 † (uncertain, untraced elsewhere)
  950. Genus Ellipsoidella P. Palik, 1966 † (uncertain, unassessed)
  951. Genus Eoaperturilites L. Yin, 1985 † (uncertain, unassessed)
  952. Genus Erizum † (uncertain, unassessed)
  953. Genus Exilisphaeridium E.R. Wicander, 1974 † (uncertain, unassessed)
  954. Genus Favosina † (uncertain, unassessed)
  955. Genus Favosphaeridium † (uncertain, unassessed)
  956. Genus Fentonia D.A. Bailey & N.M. Hogg, 1995 † (uncertain, unassessed)
  957. Genus Floris Stanevitch in Stanevi & Zheleznyak, 1990 † (uncertain, unassessed)
  958. Genus Froelichsporites Litwin, Smoot & Weems, 1993 † (uncertain, unassessed)
  959. Genus Fusulites D.O. Hemer & P.W. Nygreen, 1967 † (uncertain, unassessed)
  960. Genus Gangasphaera Prasad & Asher, 2001 † (uncertain, unassessed)
  961. Genus Gemmuloides Samuelsson & Butterfield, 2001 † (uncertain, unassessed)
  962. Genus Globiferum T.N. Hermann & B.V. Timofeev in T.V. Jankauskas, 1989 † (uncertain, unassessed)
  963. Genus Gomphomorpha P. Palik, 1966 † (uncertain, unassessed)
  964. Genus Goryniella B.V. Timofeev, 1973 † (uncertain, unassessed)
  965. Genus Hirtellosphaeridium † (uncertain, unassessed)
  966. Genus Hogklintia K.J. Dorning, 1981 † (uncertain, unassessed)
  967. Genus Homodiacrodium † (uncertain, unassessed)
  968. Genus Hymenosphaeridium † (uncertain, unassessed)
  969. Genus Hypertrachytriletes † (uncertain, unassessed)
  970. Genus Hystrichosphaeridina † (uncertain, unassessed)
  971. Genus Ingulecia B.V. Timofeev, 1982 † (uncertain, unassessed)
  972. Genus Isiophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
  973. Genus Kerbia P.N. Kolosov & V.A. Rudavskaja in P.N. Kolosov, 1984 † (uncertain, unassessed)
  974. Genus Kiptophyma I.N. Golub in B.S. Sokolov, 1979 † (uncertain, unassessed)
  975. Genus Kirbia N.S. Mikhailova & N.A. Volkova in T.V. Jankauskas, 1989 † (uncertain, unassessed)
  976. Genus Larvimorpha L.M. Yin, 1987 † (uncertain, unassessed)
  977. Genus Latoporata S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 † (uncertain, unassessed)
  978. Genus Laxidum † (uncertain, unassessed)
  979. Genus Leffingwellia M.J. Head & G. Norris, 2003 † (uncertain, unassessed)
  980. Genus Leioligotriletum † (uncertain, unassessed)
  981. Genus Leiothrichoides T.N. Hermann in B.V. Timofeev, 1974 † (uncertain, unassessed)
  982. Genus Leptonia Singh, Tewari & Gupta, 1979 † (uncertain, unassessed)
  983. Genus Liepana V.V. Kirjanov in B.M. Keller & A. Yu. Rozanov, 1979 † (uncertain, unassessed)
  984. Genus Lophoaletes † (uncertain, unassessed)
  985. Genus Lophopsophosphaera S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 † (uncertain, unassessed)
  986. Genus Lophosphaera † (uncertain, unassessed)
  987. Genus Margodiscina † (uncertain, unassessed)
  988. Genus Margomassulina S.N. Naumova ex I.K. Chepikova in M.M. Aliev & K.R. Chepikov, 1971 † (uncertain, unassessed)
  989. Genus Margoporata † (uncertain, unassessed)
  990. Genus Megascina † (uncertain, unassessed)
  991. Genus Microrugosa † (uncertain, unassessed)
  992. Genus Minutisphaeridium Tang & Tao in Cai Zhiguo, Zheng Guoguang, Cui Zhantang et al., 1998 † (uncertain, unassessed)
  993. Genus Miroedichia T.N. Hermann in T.V. Jankauskas, 1989 † (uncertain, unassessed)
  994. Genus Mirosphaera P. Palik, 1966 † (uncertain, unassessed)
  995. Genus Multangularites P. Palik, 1966 † (uncertain, unassessed)
  996. Genus Multicorisphaeridium Marheinecke, 1992 † (uncertain, unassessed)
  997. Genus Multisphaeridium † (uncertain, unassessed)
  998. Genus Mycteroligotriletum † (uncertain, unassessed)
  999. Genus Nagyiella P. Palik, 1966 † (uncertain, unassessed)
  1000. Genus Nigrilaminaria Ou-yang, Yin & Li, 1974 † (uncertain, unassessed)
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). As at 2023, acritarchs are treated in IRMNG in kingdom Plantae, in line with their botanical nomenclature and the suggestion by Moczydłowska et al., 2011 that their earliest representatives probably correspond to chlorophyte algae. [details]
IRMNG (2023). Acritarcha †. Accessed at: https://www.irmng.org/aphia.php?p=taxdetails&id=123 on 2024-02-25
Date
action
by
2010-05-31 22:00:00Z
created
2011-12-31 23:00:00Z
changed
2017-03-18 09:45:17Z
changed
2023-04-28 19:03:33Z
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]   

taxonomy source Moczydłowska, M.; Landing, E.; Zang, W.; Palacios, T. (2011). Proterozoic phytoplankton and timing of Chlorophyte algae origins. <em>Palaeontology.</em> 54(4): 721-733., available online at https://doi.org/10.1111/j.1475-4983.2011.01054.x
note: earliest acritarchs are probably chlorophytes, refer note [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). As at 2023, acritarchs are treated in IRMNG in kingdom Plantae, in line with their botanical nomenclature and the suggestion by Moczydłowska et al., 2011 that their earliest representatives probably correspond to chlorophyte algae. [details]

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