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IRMNG taxon details

Acritarcha †

123  (urn:lsid:irmng.org:taxname:123)

  1. Biota
  2. Plantae (Kingdom)
  3. Acritarcha † (Phylum)
Evitt, 1963
accepted
Phylum
Leiofusidae Eisenack, 1938 † · unaccepted (unrecognised family)

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  1. Genus Acanthodiacrodium B.V. Timofeev, 1958 †
  2. Genus Acantholigotriletes Alyushinskii, Kirichenko & Timofeev, 1957 †
  3. Genus Acantholigotriletum B.V. Timofeev, 1959 †
  4. Genus Acanthomarginata S.N. Naumova ex N.I. Umnova in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
  5. Genus Acanthominuscula Naumova [date?] †
  6. Order Acanthomorphitae †
  7. Genus Acanthopsophosphaera Naumova, 1964 †
  8. Genus Acanthorytidodiacrodium B.V. Timofeev, 1959 †
  9. Genus Acanthozonodiacrodium B.V. Timofeev, 1959 †
  10. Genus Acriora E.R. Wicander, 1974 †
  11. Genus Acrosphaeridium A. Uutela & R. Tynni, 1991 †
  12. Genus Acrum M.A. Fombella Blanco, 1977 †
  13. Genus Actinotodissus A.R. Loeblich Jr. & H. Tappan, 1978 †
  14. Genus Actinotophasis A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  15. Genus Actipilion A.R. Loeblich Jr., 1970 †
  16. Genus Adara M.A. Fombella Blanco, 1977 †
  17. Genus Adarve M.A. Fombella Blanco, 1977 †
  18. Genus Adorfia G. Burmann, 1970 †
  19. Genus Adornofusa A.R. Loeblich Jr. & H. Tappan, 1978 †
  20. Genus Aducta Z.K. Fajzulina in Z.A. Akulcheva et al., 1981 †
  21. Genus Akmanella T. Ivanova, 2009 †
  22. Genus Akomachra G.K. Colbath, 1979 †
  23. Genus Aldridgeisphaera Kozur, 1986 †
  24. Genus Alicesphaeridium W.-L. Zang in Zang & Walter, 1992 †
  25. Genus Alisum H. Górka, 1965 †
  26. Genus Alliumella E.K. Vanderflit in N.I. Umnova & E.K. Vanderflit in V.K. Golubzov, 1971 †
  27. Genus Alocomurus Playford in Playford & Dring, 1981 †
  28. Genus Alveosphaera V.V. Kirjanov, 1978 †
  29. Genus Amadeusphaeridium Zang & Walter, 1992 †
  30. Genus Ammonidium T.R. Lister, 1970 †
  31. Genus Amoeboidium B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
  32. Genus Amphitheca Vavrdova & Svobodova, 2010 †
  33. Genus Ampullula E. Righi, 1991 †
  34. Genus Amsdenium G. Playford & R. Wicander, 2006 †
  35. Genus Ancorosphaeridium Sergeev, Knoll & Vorob'eva, 2011 †
  36. Genus Angularia S.R. Samoilovitch ex G. Norris & W.A.S. Sarjeant, 1965 †
  37. Genus Angulisphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  38. Genus Anguloplanina V.A. Rudavskaja in T.F. Vozzhennikova & B.V. Timofeev, 1973 †
  39. Genus Ankyrotrochos Vecoli, 1999 †
  40. Genus Annulatopsophosphaera N.G. Pychova in A.Y. Rozanov et al., 1969 †
  41. Genus Annulodiscus M. Hajós, 1966 †
  42. Genus Annulum M.A. Fombella Blanco, 1978 †
  43. Genus Annulusia B.V. Timofeev & T.N. Hermann in Jankauskas, 1989 †
  44. Genus Anomaloplaisium H. Tappan & A.R. Loeblich Jr., 1972 †
  45. Genus Anshania S. Ouyang, 1979 †
  46. Genus Anthatractus J. Deunff, 1954 †
  47. Genus Antrodibrachium G.K. Colbath, 1990 †
  48. Genus Antrosphaera He, 1984 †
  49. Genus Apectosphaeridium R.E. Turner, 1991 †
  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 Archaeoalveolata [unknown] †
  57. Genus Archaeodinium S. Ouyang, 1979 †
  58. Genus Archaeodiscina S.N. Naumova, 1960 †
  59. Genus Archaeofavosina S.N. Naumova, 1960 †
  60. Genus Archaeohystrichosphaeridium B.V. Timofeev, 1959 ex Loeblich & Tappan, 1976 †
  61. Genus Archaeomonoporina Naumova [date?] †
  62. Genus Archaeopertusina S.N. Naumova, 1960 †
  63. Genus Archaeopylomina †
  64. Genus Archaeosacculina Pykhova, 1967 †
  65. Genus Archaeospirulina A.M. Stanevich in Stanevich et al., 2009 †
  66. Genus Archaeotunisphaeridium K. Grey, 2005 †
  67. Genus Arcosphaeridium A. Uutela & R. Tynni, 1991 †
  68. Genus Aremoricanium J. Deunff, 1955 †
  69. Genus Arkonia G. Burmann, 1970 †
  70. Genus Arkonites J.A. Legault, 1973 †
  71. Genus Artemisiocysta P.N. von Benedek, 1972 †
  72. Genus Aryballomorpha F. Martin & L.-M. Yin, 1988 †
  73. Genus Ascidiomorpha Y. Yan, 1995 †
  74. Genus Ascostomocystis W.S. Drugg & A.R. Loeblich Jr., 1967 †
  75. Genus Asketopalla A.R. Loeblich Jr. & H. Tappan, 1969 †
  76. Genus Asperatopsophosphaera D.A. Schepeleva ex E.A. Assejeva in P.L. Shulga, 1976 †
  77. Genus Asseserium M. Nagovitsin & K.E. Moczydłowska, 2012 †
  78. Genus Asteridium M. Moczydlowska, 1991 †
  79. Genus Asteriscus Kowalski, 1983 †
  80. Genus Asterocapsoides L.M. Yin & Z.P. Li, 1978 †
  81. Genus Asyncosmium R.E. Turner, 1991 †
  82. Genus Athabascaella Martin, 1984 †
  83. Genus Attritasporites Combaz, 1967 †
  84. Genus Aureosphaera F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  85. Genus Aureotesta M. Vavrdová, 1972 †
  86. Genus Auritusphaera Strother, 2008 †
  87. Genus Australiastrum K. Grey, 2005 †
  88. Genus Avalonella Wauthoz & Dorning, 2001 †
  89. Genus Axisphaeridium Eisenack, 1967 †
  90. Genus Bacillidinium D. Habib & S.D. Knapp, 1982 †
  91. Genus Bacisphaeridium A. Eisenack, 1962 †
  92. Genus Baculatireticulatus T.K. Al-Ameri, 1984 †
  93. Genus Bailikania A.A. Trestshetenkova in Z.A. Akulcheva et al., 1981 †
  94. Genus Baltisphaera G. Burmann, 1970 †
  95. Genus Baltisphaeridium Eisenack, 1958 †
  96. Genus Baltisphaerosum R.E. Turner, 1984 †
  97. Genus Bambuites Sommer, 1971 †
  98. Genus Barakella F.H. Cramer & M. del Carmen R. Díez, 1977 †
  99. Genus Barathrisphaeridium E.R. Wicander, 1974 †
  100. Genus Barbestiastra W.A.S. Sarjeant & R.P.W. Stancliffe, 1994 †
  101. Genus Bartenia R. Helby, 1987 †
  102. Genus Bavlinella E.D. Shepeleva, 1962 †
  103. Genus Beringiella J.P. Bujak, 1984 †
  104. Genus Beromia Vavrdová, 1986 †
  105. Genus Biannulatisphaerities Neville in Neves et al., 1973 †
  106. Genus Biattiglobus ? Zhu et al., 1984 †
  107. Genus Bimerga Wood, 1995 †
  108. Genus Bipatellifera C. Singh, 1983 †
  109. Genus Bisbullatum X. Fang, 1987 †
  110. Genus Bispinosphaera P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  111. Genus Bojasphaera G.K. Colbath, 1990 †
  112. Genus Bothroligotriletes B.V. Timofeev, 1958 †
  113. Genus Bothrotrachytriletes ? B.V. Timofeev, 1955 †
  114. Genus Brachiprojectidium D. Habib & S.D. Knapp, 1982 †
  115. Genus Bresca M.A. Fombella Blanco, 1978 †
  116. Genus Brestovia L.T. Paskeviciené, 1980 †
  117. Genus Briareus A.H. Knoll, 1992 †
  118. Genus Brocholaminaria S. Ouyang, L. Yin & Z. Li, 1974 †
  119. Genus Brochopsophosphaera E.D. Shepeleva in E.D. Shepeleva & B.V. Timofeev, 1963 †
  120. Genus Brochos Vanderflit & Mikhailova, 1992 †
  121. Genus Brochosaccus ? Naumova †
  122. Genus Bubomorpha Yin in Chen, Qian, Lin, Zhang, Wang, Yin & Erdtmann, 1985 †
  123. Genus Buchinia N.A. Volkova, 1990 †
  124. Genus Buedingiisphaeridium Schaarschmidt, 1963 †
  125. Genus Bullatosphaera N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  126. Genus Caelatosphaera Wicander, Playford & Robertson, 1999 †
  127. Genus Caldariola Molyneux in Molyneux & Rushton, 1988 †
  128. Genus Calyxia S. Willman in Willman & Moczydłowska, 2008 †
  129. Genus Calyxiella I.N. Golub & N.A. Volkova in Volkova & Golub, 1985 †
  130. Genus Campenia K. Mädler, 1963 †
  131. Genus Candelasphaeridium J. Deunff, 1978 †
  132. Genus Cantabrica F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  133. Genus Carinatosphaeridium Eiserhardt, 1984 †
  134. Genus Carminella F.H. Cramer, 1968 †
  135. Genus Casiopea M.A. Fombella Blanco, 1978 †
  136. Genus Catillopsis W.S. Drugg, 1970 †
  137. Genus Caudatopsophosphaera N.G. Pykhova, 1969 †
  138. Genus Caudina M.B. Gnilovskaja in B.M. Keller & A.Y. Rozanov, 1979 †
  139. Genus Caulissoma R. Wicander & G. Playford, 2021 †
  140. Genus Celtiberium M.A. Fombella Blanco, 1977 †
  141. Genus Centrasphaeridium R. Wicander & G. Playford, 1985 †
  142. Genus Centrum A.M. Stanevitch in Khomentovsky & Shenfil, 1986 †
  143. Genus Cephalia S.C.D. Sah & R.K. Kar, 1974 †
  144. Genus Cepillum F.H. Cramer, 1964 †
  145. Genus Cerastum R.E. Turner, 1991 †
  146. Genus Ceratocystidiopsis G. Deflandre, 1938 †
  147. Genus Ceratophyton V.V. Kirjanov in Keller & Rozanov, 1979 †
  148. Genus Ceratosphaeridium K. Grey, 2005 †
  149. Genus Cerebrosphaera N.J. Butterfield in Butterfield et al., 1994 †
  150. Genus Cerionopora Y. Zhang & X.-L. Yuan, 1992 †
  151. Genus Chabiosphaera K. Drábek, 1972 †
  152. Genus Chalaziosphaeridium W.A.S. Sarjeant & R.P.W. Stancliffe, 1994 †
  153. Genus Cheleutochroa A.R. Loeblich Jr. & H. Tappan, 1978 †
  154. Genus Chlamydosphaeridia A. Eisenack, 1971 †
  155. Genus Chuttecloska A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  156. Genus Circinatisphaera M.A. Miller, 1987 †
  157. Genus Circumiella E.A. Assejeva, 1974 †
  158. Genus Cirrifera I.C. Cookson & A. Eisenack, 1960 †
  159. Genus Cithariplana S.K. Srivastava, 1984 †
  160. Genus Clavata A.M. Stanevitch in Jankauskas, 1989 †
  161. Genus Clavaticystis D. Habib & S.D. Knapp, 1982 †
  162. Genus Cleithronetrum A.R. Loeblich Jr. & H. Tappan, 1978 †
  163. Genus Closteromorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  164. Genus Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 †
  165. Genus Collumosphaera K.P. Jain & S.K. Dutta in Dutta & Jain, 1980 †
  166. Genus Collyngbya N. Wang, 1989 †
  167. Genus Comasphaeridium F.L. Staplin, J. Jansonius & S.A. Pocock, 1965 †
  168. Genus Comorhachia Xiao & Hu in Ding et al., 1996 †
  169. Genus Comptaluta H. Tappan & A.R. Loeblich Jr., 1972 †
  170. Genus Conaticystis D. Habib & S.D. Knapp, 1982 †
  171. Genus Concavaesphaera W. Liu, Z. Yin, B. Pan, B. Shen, L. Dong & G. Li, 2023 †
  172. Genus Concentrica [author?] †
  173. Genus Concentrites B.S. Venkatachala, L.L. Bhandari, A.N. Chaube & M.S. Rawat, 1974 †
  174. Genus Coneosphaera Q.L. Luo, 1991 †
  175. Genus Conglutinatosphaeridium B.V. Timofeev, 1965 †
  176. Genus Conradidium F. Stockmans & Y. Willière, 1969 †
  177. Genus Constrictosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  178. Genus Contextus [author?] †
  179. Genus Cooksonella E. Nagy, 1965 †
  180. Genus Cordobesia E.D. Pöthe de Baldis, 1977 †
  181. Genus Cornplanktona S.C.D. Sah & R.K. Kar, 1974 †
  182. Genus Cornuferifusa Jacobson & Achab, 1985 †
  183. Genus Cornutosphaera Sin, 1973 †
  184. Genus Corollasphaeridium Dean & Martin, 1982 †
  185. Genus Coronitesta A. Uutela & R. Tynni, 1991 †
  186. Genus Coronopsis O. Wetzel, 1961 †
  187. Genus Corrugasphaera R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
  188. Genus Coryphidium M. Vavrdová, 1972 †
  189. Genus Costatilobus G. Playford, 1977 †
  190. Genus Costatosphaerina A.S. Lopuchin in M.I. Neustadt, 1966 †
  191. Genus Crameria T.R. Lister, 1970 †
  192. Genus Crassiangulina S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  193. Genus Crassicorium R. Buick & A.H. Knoll, 1999 †
  194. Genus Crassifusa Rodriguez-Gonzalez, 1983 †
  195. Genus Crassisphaeridium E.R. Wicander, 1974 †
  196. Genus Craterisphaeridium J. Deunff, 1981 †
  197. Genus Creberlumectum R. Harland & W.A.S. Sarjeant, 1970 †
  198. Genus Crinita N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  199. Genus Cristallinium Vanguestaine, 1978 †
  200. Genus Crucidia E.G. Ottone, 1996 †
  201. Genus Crucigenites P. Palik, 1966 †
  202. Genus Cryptosphaera S.C.D. Sah & R.K. Kar, 1974 †
  203. Genus Cryptostromatium Moreau-Benoît, 1974 †
  204. Genus Cuatrifolia F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  205. Genus Cucumiforma Mikhailova, 1986 †
  206. Genus Cupritia B. Courtinat in Courtinat & Gaillard, 1980 †
  207. Genus Cyclodictyon I.C. Cookson & A. Eisenack, 1958 †
  208. Genus Cycloposphaeridium A. Uutela & R. Tynni, 1991 †
  209. Genus Cyclopsiella W.S. Drugg & A.R. Loeblich Jr., 1967 †
  210. Genus Cymatiogalea J. Deunff, 1961 †
  211. Genus Cymatiomorpha W.C. Elsik & D.L. Dilcher, 1974 †
  212. Genus Cymatiosphaeroides Knoll, 1984 †
  213. Genus Cymbosphaeridium T.R. Lister, 1970 †
  214. Genus Cypandinia T.N. Hermann in Hermann & Podkovyrov, 2002 †
  215. Genus Cystidiopsis E. Nagy, 1965 †
  216. Genus Dactylofusa I.M. Brito & A.S. Santos, 1965 †
  217. Genus Daedalosphaera C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  218. Genus Daillydium F. Stockmans & Y. Willière, 1969 †
  219. Genus Dasydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
  220. Genus Dasydorus G. Playford & F. Martin, 1984 †
  221. Genus Dasypilula A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  222. Genus Dasyrytidodiacrodium B.V. Timofeev, 1959 †
  223. Genus Dasysphaeridium Zang & Walter, 1992 †
  224. Genus Dateriocradus H. Tappan & A.R. Loeblich Jr., 1972 †
  225. Genus Decahedrella S.B. Manum, 1997 †
  226. Genus Deltoidinia Jiabo, 1978 †
  227. Genus Deltotosoma Playford in Playford & Dring, 1981 †
  228. Genus Demorhethium A.R. Loeblich, Jr. & E.R. Wicander, 1974 †
  229. Genus Densisphaera M. Nagovitsin & K.E. Moczydłowska, 2012 †
  230. Genus Deunffia C. Downie, 1960 †
  231. Genus Deusilites D.O. Hemer & P.W. Nygreen, 1967 †
  232. Genus Devisphaera Q. Tang, N.C. Hughes, N.R. McKenzie, P.M. Myrow & S. Xiao, 2017 †
  233. Genus Diacrocanthidium G. Deflandre & J.-C. Foucher, 1967 †
  234. Order Diacromorphitae †
  235. Genus Diaphorochroa E.R. Wicander, 1974 †
  236. Genus Dichotisphaera R.E. Turner, 1984 †
  237. Genus Dichozonata V.V. Kirjanov, 1978 †
  238. Genus Dicommopalla A.R. Loeblich Jr., 1970 †
  239. Genus Dicrodiacrodium G. Burmann, 1968 †
  240. Genus Dicrospinasphaera X. Yuan & H.J. Hofmann, 1998 †
  241. Genus Dictyochroa H. Górka, 1965 †
  242. Genus Dictyopsophosphaera Naumova, 1964 †
  243. Genus Dictyosphaeridium W. Wetzel, 1952 †
  244. Genus Dicyclopyla N. Wang, 1989 †
  245. Genus Diexallophasis A.R. Loeblich Jr., 1970 †
  246. Genus Dilatisphaera T.R. Lister, 1970 †
  247. Genus Dimastigobolus G. Deflandre, 1936 †
  248. Genus Diornatosphaera C. Downie, 1958 †
  249. Genus Diplofusa I.C. Cookson & A. Eisenack, 1960 †
  250. Genus Diplomembrana Yan, 1985 †
  251. Genus Discoidella D. Habib, 1970 †
  252. Genus Disnella L.T. Paskeviciené, 1980 †
  253. Genus Disparifusa A.R. Loeblich Jr., 1970 †
  254. Genus Distosphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  255. Genus Divietipellis E.R. Wicander, 1974 †
  256. Genus Domasia C. Downie, 1960 †
  257. Genus Domasiella Eisenack, 1969 †
  258. Genus Dominopolia V.V. Kirjanov, 1974 †
  259. Genus Dongyesphaera L. Yin, F. Meng, F. Kong & C. Niu, 2020 †
  260. Genus Dorsennidium E.R. Wicander, 1974 †
  261. Genus Downiea E.D. Pöthe de Baldis, 1975 †
  262. Genus Dudleyia Eisenack, 1978 †
  263. Genus Duospinosphaera Q. Ye, J. Li, J. Tong, Z. An, J. Hu & S. Xiao, 2022 †
  264. Genus Dupliciradiatum González, Moreno & Playford, 2005 †
  265. Genus Duplicisphaeridium H. Górka, 1980 †
  266. Genus Duplisphaera M. Moczydlowska, 1998 †
  267. Genus Ecmelostoiba E.R. Wicander, 1974 †
  268. Genus Ecthymabrachion E.R. Wicander, 1974 †
  269. Genus Ecthymapalla A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  270. Genus Ectypolopus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  271. Genus Eisenackidium F.H. Cramer & M. del C. Díez de Cramer, 1968 †
  272. Genus Elektoriskos A.R. Loeblich Jr., 1970 †
  273. Genus Elenia Volkova, 1984 †
  274. Genus Eliasum M.A. Fombella Blanco, 1977 †
  275. Genus Ellipsaletes F.H. Cramer, 1966 †
  276. Genus Enigmadinium Wrenn & Hart, 1988 †
  277. Genus Enneadikosocheia G.K. Colbath, 1979 †
  278. Genus Enretisphaeridium S. Ouyang, L. Yin & Z. Li, 1974 †
  279. Genus Eoaperturilites L. Yin, 1985 †
  280. Genus Eomarginata T.V. Jankauskas, 1979 †
  281. Genus Eotintinnopsis Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  282. Genus Eotylotopalla L.M. Yin, 1987 †
  283. Genus Ephelopalla E.R. Wicander, 1974 †
  284. Genus Epicephalopyxis G. Deflandre, 1938 †
  285. Genus Eponula Vavrdová, 1986 †
  286. Genus Ericanthea F.H. Cramer & M. del Carmen R. Díez, 1977 †
  287. Genus Ericiasphaera G. Vidal, 1990 †
  288. Genus Estiastra A. Eisenack, 1959 †
  289. Genus Estrella P. Liu & M. Moczydłowska, 2019 †
  290. Genus Ethmosphaeridium B.V. Timofeev, 1971 †
  291. Genus Eupoikilofusa F.H. Cramer, 1970 †
  292. Genus Eusphaera Liu, 1982 †
  293. Genus Evittia I.M. Brito, 1967 †
  294. Genus Excultibrachium A.R. Loeblich Jr. & H. Tappan, 1978 †
  295. Genus Exilisphaeridium E.R. Wicander, 1974 †
  296. Genus Exochoderma E.R. Wicander, 1974 †
  297. Genus Eyrea I.C. Cookson & A. Eisenack, 1970 †
  298. Genus Fatkia Vavrdová, 1994 †
  299. Genus Favososphaeridium B.V. Timofeev, 1966 †
  300. Genus Ferromia M. Vavrdová in Pokorný, 1979 †
  301. Genus Filisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  302. Genus Fimbriaglomerella A.R. Loeblich Jr. & W.S. Drugg, 1968 †
  303. Genus Flammulasphaera R.E. Richards & G.L. Mullins, 2003 †
  304. Genus Floris Stanevich in Stanevich & Zheleznyak, 1990 †
  305. Genus Florisphaeridium T.R. Lister, 1970 †
  306. Genus Focusphaera Padilha de Quadros, 1986 †
  307. Genus Foliomorpha Yan, 1985 †
  308. Genus Foveofusa K.M. Lele & A. Chandra, 1972 †
  309. Genus Fractoricoronula G.K. Colbath, 1979 †
  310. Genus Frankea G. Burmann, 1970 †
  311. Genus Fromea I.C. Cookson & A. Eisenack, 1958 †
  312. Genus Fuchunshania Y. Sin & K. Liu, 1978 †
  313. Genus Fueloepia E. Nagy, 1965 †
  314. Genus Fulgisphaeridium J. Deunff, 1980 †
  315. Genus Fusilabellum S.M. Awramik in Awramik & Allison, 1989 †
  316. Genus Galeasphaeridium N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  317. Genus Gangasphaera B. Prasad & R. Asher, 2001 †
  318. Genus Gemmuloides J. Samuelsson & N.J. Butterfield, 2001 †
  319. Genus Germinosphaera N.S. Mikhailova in Istchenko, 1986 †
  320. Genus Geron F.H. Cramer, 1966 †
  321. Genus Gigadiacrodium Z. Szczepanik, T. Servais & A. Żylińska, 2017 †
  322. Genus Gigantosphaeridium H. Agić, M. Moczydłowska & L.-M Yin, 2015 †
  323. Genus Glaucotesta M. Vavrdová, 1982 †
  324. Genus Globiferum T.N. Hermann & B.V. Timofeev in Jankauskas, 1989 †
  325. Genus Globorotundata A.M. Duane, 1997 †
  326. Genus Globosphaeridium M. Moczydlowska, 1991 †
  327. Genus Globulaesphaeridium R.S. Tiwari & A.A. Moiz, 1971 †
  328. Genus Gloecapsamorphites S. Ouyang, L. Yin & Z. Li, 1974 †
  329. Genus Glottimorpha B.V. Timofeev, 1966 †
  330. Genus Gneudnaella G. Playford in Playford & Dring, 1981 †
  331. Genus Gomphosphaeridium L.D. Gao, 1988 †
  332. Genus Goniocystis Y.-Z. Yan, 1991 †
  333. Genus Goniolopadion G. Playford, 1977 †
  334. Genus Goniosphaeridium Eisenack, 1969 †
  335. Genus Gordonirundum E.G. Raevskaya & T. Servais, 2017 †
  336. Genus Gorgonisphaeridium F.L. Staplin, J. Jansonius & S.A. Pocock, 1965 †
  337. Genus Gouhousphaeridium Yang in Yang et al., 1980 †
  338. Genus Gracilisphaeridium A. Eisenack & Cramer in Eisenack et al., 1973 †
  339. Genus Granitunica P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  340. Genus Granomarginata S.N. Naumova, 1960 †
  341. Genus Granomarginatasphaera Pyatiletov, 1988 †
  342. Genus Granopsophosphaera Naumova, 1964 †
  343. Genus Granularia Kowalski, 1983 †
  344. Genus Gregalocapsa N. Wang, 1989 †
  345. Genus Greinervillites M.N. Bose & R.K. Kar, 1967 †
  346. Genus Guttatisphaeridium E.R. Wicander, 1974 †
  347. Genus Gyalorhethium A.R. Loeblich Jr. & H. Tappan, 1978 †
  348. Genus Gyalosphaeridium Zang & Walter, 1992 †
  349. Genus Gyratosphaerina A.S. Lopuchin in Neustadt, 1966 †
  350. Genus Halophoridia I.C. Cookson & A. Eisenack, 1962 †
  351. Genus Haplocystia K.L. Segroves, 1967 †
  352. Genus Hapsidopalla G. Playford, 1977 †
  353. Genus Helios F.H. Cramer, 1964 †
  354. Genus Heliospermopsis E. Nagy, 1965 †
  355. Genus Heliosphaeridium M. Moczydlowska, 1991 †
  356. Genus Heloriopodum T. Servais & S.G. Molyneux, 1997 †
  357. Genus Helosphaeridium T.R. Lister, 1970 †
  358. Genus Hemibaltisphaeridium F.H. Cramer, 1970 †
  359. Genus Hemideunffia B. Thusu, 1973 †
  360. Genus Hercyniana G. Burmann, 1976 †
  361. Genus Herisphaera C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  362. Order Herkomorphitae †
  363. Genus Heteromorphidion A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  364. Genus Heteropetalia Y. Yan, 1991 †
  365. Genus Hidasia E. Nagy, 1965 †
  366. Genus Histopalla G. Playford in Playford & Dring, 1981 †
  367. Genus Hocosphaeridium W. Zang & M.R. Walter, 1992 †
  368. Genus Hoegklintia K.J. Dorning, 1981 †
  369. Genus Holothuriadeigma A.R. Loeblich Jr., 1970 †
  370. Genus Homodiacrodium [author?] †
  371. Genus Homomorpha Y. Xiao & X. Hu in Xiao et al., 1996 †
  372. Genus Hubeisphaera Y.S. Sin & K.Z. Liu, 1978 †
  373. Genus Hyalinsphaeridia P. Bernier & B. Courtinat, 1979 †
  374. Genus Hyalocyrillium C.W. Allison in Allison & Awramik, 1989 †
  375. Genus Hymenodiscina Naumova, 1964 †
  376. Genus Hymenophacoides Roblot, 1967 †
  377. Genus Hyrtellosphaeridium [author?] †
  378. Genus Hystrichoangulatum Wilson & Hoffmeister in Downie & Sarjeant, 1965 †
  379. Genus Hystrichocorpulentum Willson & Hoffmeister in Downie & Sarjeant, 1965 †
  380. Genus Hystrichotriangulatum Andreeva, 1966 †
  381. Genus Iberosphaeridium F.H. Cramer, M. del C.R. Diez, R.M. Rodriguez & M.A. Fombella, 1976 †
  382. Genus Ichnosphaera M. Jachowicz-Zdanowska, 2013 †
  383. Genus Impluviculus A.R. Loeblich Jr & H. Tappan, 1969 †
  384. Genus Incurvatina S.N. Naumova & N.I. Umnova in Umnova, 1975 †
  385. Genus Inderites S.A. Abramova & O.F. Marchenko, 1964 †
  386. Genus Indigestosphaeridium Zang & Walter, 1992 †
  387. Genus Induoglobus A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  388. Genus Ingulecia B.V. Timofeev, 1982 †
  389. Genus Introvertocystis C.M. Mays & J.D. Stilwell, 2012 †
  390. Genus Intubidinium ? Zhou, 2000 †
  391. Genus Involusphaeridium P. Filipiak et al., 2020 †
  392. Genus Iroistella J. Deunff, 1980 †
  393. Genus Izhoria I.N. Golub & N.A. Volkova in Volkova & Golub, 1985 †
  394. Genus Jandiatubaites L.P. de Quadros, 1986 †
  395. Genus Jilinella L.M. Yin, 1987 †
  396. Genus Joehvisphaera A. Uutela & R. Tynni, 1991 †
  397. Genus Joviella K. Matsuoka & J.P. Bujak, 1988 †
  398. Genus Jubatasphaera A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  399. Genus Keltmia N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  400. Genus Kenlidinia Z. Pan in Xu et al., 1997 †
  401. Genus Kerbia P.N. Kolosov & V.A. Rudavskaja in Kolosov, 1984 †
  402. Genus Kildinella B.V. Timofeev in Shepeleva & Timofeev, 1963 †
  403. Genus Kildinosphaera G. Vidal in Vidal & Siedlecka, 1983 †
  404. Genus Kiptophyma I.N. Golub in Sokolov, 1979 †
  405. Genus Kirbia N.S. Mikhailova & N.A. Volkova in Jankauskas, 1989 †
  406. Genus Kladothecidium M. Vavrdová, 1986 †
  407. Genus Knollisphaeridium S. Willman & M. Moczydłowska, 2008 †
  408. Genus Konderia A.F. Weiss, 1983 †
  409. Genus Korojonia I.C. Cookson & A. Eisenack, 1958 †
  410. Genus Krimodiscus Aristova, 1971 †
  411. Genus Kundasphaera Uutela, 1989 ex Uutela & Tynni, 1991 †
  412. Genus Labruscasphaeridium K. Grey, 2005 †
  413. Genus Labyrinthosphaeridium A. Uutela & R. Tynni, 1991 †
  414. Genus Lacunopsophosphaera N.G. Pychova in Rozanov et al., 1969 †
  415. Genus Lacunosphaeridium A. Uutela & R. Tynni, 1991 †
  416. Genus Ladogella I.N. Golub & N.A. Volkova in N.A. Volkova & I.N. Golub, 1985 †
  417. Genus Laminasphaera P. Liu & M. Moczydłowska, 2019 †
  418. Genus Lancettopsis K. Mädler, 1963 †
  419. Genus Lanveocia J. Deunff, 1978 †
  420. Genus Lavradosphaera S. De Schepper & M.J. Head, 2008 †
  421. Genus Laxidium †
  422. Genus Leffingwellia M.J. Head & G. Norris, 2003 †
  423. Genus Leioaletes B.V. Timofeev, 1955 †
  424. Genus Leioarachnitum Andreeva, 1966 †
  425. Genus Leiofusa A. Eisenack, 1938 †
  426. Genus Leiofusidium T.V. Jankauskas, 1982 †
  427. Genus Leioligotriletes B.V. Timofeev, 1958 †
  428. Genus Leiomarginatasphaera †
  429. Genus Leioplanktona R.K. Kar & R.K. Saxena, 1976 †
  430. Genus Leiopsophosphaera S.N. Naumova, 1960 †
  431. Family Leiosphaeridaceae Timofeev, 1956 †
  432. Genus Leiosphaeridia A. Eisenack, 1958 †
  433. Genus Leiosphaeridium F.L. Staplin, 1961 †
  434. Genus Leiovalia Eisenack, 1965 †
  435. Genus Leiozonosphaeridium †
  436. Genus Leoniella F.H. Cramer, 1964 †
  437. Genus Leprotolypa G.K. Colbath, 1979 †
  438. Genus Leptobrachion K.J. Dorning, 1981 †
  439. Genus Liadiovitas †
  440. Genus Liepaina T.V. Jankauskas & N.A. Volkova in Volkova et al., 1979 †
  441. Genus Liepana V.V. Kirjanov in Keller & Rozanov, 1979 †
  442. Genus Likropalla G.K. Colbath, 1979 †
  443. Genus Liliosphaeridium A. Uutela & R. Tynni, 1991 †
  444. Genus Limaites L.P. de Quadros, 1986 †
  445. Genus Limbicysta N.G. Marshall, 1989 †
  446. Genus Linotolypa Eisenack, 1962 †
  447. Genus Lititzina Raevskaya & Iskül, 2024 †
  448. Genus Liulaobeinella Yan, 1982 †
  449. Genus Liulaobeisphaera Q. Yang et al., 1980 †
  450. Genus Lobiplanktonia †
  451. Genus Lobomorpha Yan, 1985 †
  452. Genus Lobotheca Vavrdová, 1986 †
  453. Genus Loeblichia Playford & Wicander, 1988 †
  454. Genus Lomatolopas Playford in Playford & Dring, 1981 †
  455. Genus Lontohystrichosphaera B.J. Slater, T.H.P. Harvey & N.J. Butterfield, 2018 †
  456. Genus Lophoaletes †
  457. Genus Lophodiacrodium B.V. Timofeev, 1958 †
  458. Genus Lophodictyotidium S.A.J. Pocock, 1972 †
  459. Genus Lopholigotriletes Alyushinskii et al., 1957 †
  460. Genus Lopholiotriletum B.V. Timofeev, 1959 †
  461. Genus Lophomarginata Pychova, 1969 †
  462. Genus Lophopsophosphaera S.N. Naumova ex N.I. Umnova in Umnova & Yakovlev, 1970 †
  463. Genus Lophorytidodiacrodium B.V. Timofeev, 1958 †
  464. Genus Lophosphaera †
  465. Genus Lophosphaeridium B.V. Timofeev ex C. Downie, 1963 †
  466. Genus Lophozonodiacrodium B.V. Timofeev, 1959 †
  467. Genus Lua F. Martin & L.-M. Yin, 1988 †
  468. Genus Lunataforma M.A. Miller, M. Vecoli & C. Cesari, 2017 †
  469. Genus Lunulidia A. Eisenack, 1958 †
  470. Genus Lusatia G. Burmann, 1970 †
  471. Genus Luscinasphaera Wicander & Wood, 1997 †
  472. Genus Lusitanium Elaouad-Debbaj, 1981 †
  473. Genus Macroptycha B.V. Timofeev, 1973 ex Timofeev et al., 1976 †
  474. Genus Majasphaeridium T.N. Hermann in Sokolov, 1979 †
  475. Genus Mamillata S.N. Naumova, 1968 †
  476. Genus Maranhites I.M. Brito, 1965 †
  477. Genus Margodiscina †
  478. Genus Margomassulina S.N. Naumova ex I.K. Chepikova in Aliev & Chepikov, 1971 †
  479. Genus Margominuscula S.N. Naumova ex T.V. Jankauskas, 1989 †
  480. Genus Margoporata †
  481. Genus Margoporina S.N. Naumova, 1968 †
  482. Genus Marrocanium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
  483. Genus Marsupicapsa S. Ouyang, 1979 †
  484. Genus Martinsphaeridium W.A.S. Sarjeant & Vavrdová, 1997 †
  485. Genus Massulina †
  486. Genus Mastigophycus F.-X. Wang & Y.-Y. Zhai, 1982 †
  487. Genus Mastosphaera ? C. Yin, 1995 †
  488. Genus Matanomadhia R.K. Kar & R.K. Saxena, 1976 †
  489. Genus Mathurosphaera C.P. Varma & A.K. Dangwal, 1964 †
  490. Genus Matulamorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  491. Genus Mecsekia M. Hajós, 1966 †
  492. Genus Medousapalla Wood & Clendening, 1982 †
  493. Genus Megapolybessurus N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  494. Genus Megascina †
  495. Genus Mehlisphaeridium K.L. Segroves, 1967 †
  496. Genus Melanosphaera ? F. Wang & Q. Luo in Luo et al., 1982 (1983?) †
  497. Genus Membranites M.H. Al-Ruwaili, 2000 †
  498. Genus Membranolimbus V.S. Maljavkina ex G. Norris & W.A.S. Sarjeant, 1965 †
  499. Genus Membrosphaera K.H. Eiserhardt, 1991 †
  500. Genus Mengeosphaera S. Xiao, C. Zhou, P. Liu, D. Wang & X. Yuan, 2014 †
  501. Genus Menneria A.S. Lopuchin, 1971 †
  502. Genus Meridinium M. Vavrdová, 1989 †
  503. Genus Metaleiofusa D. Wall, 1965 †
  504. Genus Metaridium J.B. Riding, S.L. Matthews, N.H. Miles & A. Wolfard, 1998 †
  505. Genus Miaplacidus M.A. Fombella Blanco, 1978 †
  506. Genus Micrhystridium Deflandre, 1938 †
  507. Genus Microancyratium D. Habib & S.D. Knapp, 1982 †
  508. Genus Microbaculidinium D. Habib & S.D. Knapp, 1982 †
  509. Genus Microfasta R. Morgan, 1975 †
  510. Genus Microptycha †
  511. Genus Microsphaeroides ? X. Hu & Y. Xiao in Xiao et al., 1996 †
  512. Genus Microvalia R. Tynni & A. Uutela, 1984 †
  513. Genus Miniococcus F. Wang & Q. Luo, 1984 †
  514. Genus Minutissima Naumova in Naumova & Pavlovski, 1961 †
  515. Genus Mirificysta J.-X. Yu, 1982 †
  516. Genus Miroedichia T.N. Hermann in Jankauskas, 1989 †
  517. Genus Mispertonia D. McLean, D.J. Bodman, P. Lucas & J.L. Pendleton, 2018 †
  518. Genus Mitroporata A.S. Lopuchin in Neustadt, 1966 †
  519. Genus Monocrodium P. Pittau, 1985 †
  520. Genus Monosozosphaeridium W.-L. Zang & M.R. Walter, 1992 †
  521. Genus Monostichus X. Zhu in Zhu et al., 1984 †
  522. Genus Monotrematosphaeridium Sin, 1962 †
  523. Genus Monotrematum B.V. Timofeev, 1960 †
  524. Genus Montanella H.D. Pflug, 1965 †
  525. Genus Morcoa M. del Carmen R. Díez & F.H. Cramer, 1977 †
  526. Genus Muhosspora R. Tynni, 1966 †
  527. Genus Multicorisphaeridium U. Marheinecke, 1992 †
  528. Genus Multifronsphaeridium Zang & Walter, 1992 †
  529. Genus Multiplicisphaeridium F.L. Staplin, 1961 †
  530. Genus Mutabilisphaera Zang in Gravestock et al., 2001 †
  531. Genus Mycteroligotriletes B.V. Timofeev, 1958 †
  532. Genus Naevisphaeridium E.R. Wicander, 1974 †
  533. Genus Nannobarbophora D. Habib & S.D. Knapp, 1982 †
  534. Genus Nanocyclopia A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  535. Genus Narcarvonia M.E. Dettmann & G. Playford, 1994 †
  536. Genus Navifusa A. Combaz, F.W. Lange & J. Pansart, 1967 †
  537. Genus Nellia I.N. Golub & N.A. Volkova in Volkova & Golub, 1985 †
  538. Genus Nemaphylla Y. Xiao & X. Hu in Xiao et al., 1996 †
  539. Genus Neoastrion M.N. Viswanathiah, V. Venkatachalapathy & S.P. Mahalakshmamma, 1979 †
  540. Genus Neoveryhachium F.H. Cramer, 1970 †
  541. Order Netromorphitae †
  542. Genus Nevidia M. Vavrdová, 1966 †
  543. Genus Nexosarium R.E. Turner, 1984 †
  544. Genus Nigrilaminaria S. Ouyang, L. Yin & Z. Li, 1974 †
  545. Genus Ninadiacrodium E.G. Raevskaya & T. Servais, 2009 †
  546. Genus Nirundella E.G. Raevskaya & T. Servais, 2017 †
  547. Genus Nodosus S.E. Hagenfeldt, 1989 †
  548. Genus Nodusosphaeridium A. Uutela, 1989 †
  549. Genus Nollia Eisenack, 1979 †
  550. Genus Nothooidium A.R. Loeblich Jr. & H. Tappan, 1976 †
  551. Genus Nucellohystrichosphaera B.V. Timofeev & T.N. Hermann in Timofeev et al., 1976 †
  552. Genus Nucellosphaera A.M. Stanevitch in Jankauskas, 1989 †
  553. Genus Nucellosphaeridium B.V. Timofeev, 1966 †
  554. Genus Nummus R. Morgan, 1975 †
  555. Genus Nunatsiaquus C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
  556. Genus Ocalasphaera K.F. Prössl, 1992 †
  557. Genus Ocridoligotriletes B.V. Timofeev, 1958 †
  558. Genus Ocridosphaeridium B.V. Timofeev, 1973 †
  559. Genus Octaedryxium V.A. Rudavskaja in Vozzhennikova & Timofeev, 1973 †
  560. Genus Octaplata S.C.D. Sah & R.K. Kar, 1974 †
  561. Genus Octoedryxium V.A. Rudavskaja, 1973 †
  562. Genus Odontomorpha M. Hajós, 1966 †
  563. Genus Odontothrix D. Habib & S.D. Knapp, 1982 †
  564. Genus Okridoligotriletes Y.A. Alyushinskii et al., 1957 †
  565. Genus Olenekus A.M. Stanevich in Stanevich et al., 2009 †
  566. Genus Oligopogonium A.R. Loeblich Jr. & H. Tappan, 1976 †
  567. Genus Ollula F. Góczán, 1962 †
  568. Genus Omalophyma I.N. Golub in Sokolov, 1979 †
  569. Genus Onondagella F.H. Cramer, 1966 †
  570. Genus Ooidium B.V. Timofeev, 1957 †
  571. Genus Operculites K.R. Newman, 1965 †
  572. Genus Oppilatala A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  573. Genus Orbiculus L.L. Bagdasaryan, 1980 †
  574. Genus Ordovicidium H. Tappan & A.R. Loeblich Jr., 1972 †
  575. Genus Orgulla P.N. Kolosov & V.A. Rudavskaja in Kolosov, 1984 †
  576. Genus Ornatasphaera R.K. Saxena, A. Chandra & M.G.A.P. Setty, 1982 †
  577. Genus Ornatosphaeridia R.N. Ogurtsova, 1975 †
  578. Genus Orthosphaeridium Eisenack, 1968 †
  579. Genus Orygmatosphaeridium B.V. Timofeev, 1959 †
  580. Genus Osculosphaera N.J. Butterfield in Butterfield et al., 1994 †
  581. Genus Oshania F. Wang, G. Zhou & Q. Chen, 1980 †
  582. Genus Ostiumsphaeridium N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  583. Genus Oudhkusumites N.C. Srivastava, 1967 †
  584. Genus Ovalisacculina Naumova †
  585. Genus Ovnia F.H. Cramer & M. del Carmen R. Díez, 1977 †
  586. Genus Ovulum T.V. Jankauskas, 1975 †
  587. Genus Ovum A. Eisenack, 1931 †
  588. Genus Ozotobrachion A.R. Loeblich Jr. & W.S. Drugg, 1968 †
  589. Genus Pachysphaeridium G. Burmann, 1970 †
  590. Genus Palacanthus E.R. Wicander, 1974 †
  591. Genus Palaeobion O. Wetzel, 1961 †
  592. Genus Palaeocladophora C. Eklund, 1990 †
  593. Genus Palaeocryptidium G. Deflandre, 1955 †
  594. Genus Palaeodiacrodium Y. Xing & L. Gao in Gao et al., 1995 †
  595. Genus Palaeoharpastum R.A. Fensome, G.L. Williams, M.S. Barss, J.M. Freeman & J.M. Hill, 1990 †
  596. Genus Palaeohystrichosphaeridium K.H. Eiserhardt, 1986 †
  597. Genus Palaeomonostroma C. Eklund, 1990 †
  598. Genus Palaeostomocystis Deflandre, 1935 †
  599. Genus Palaeovolvox W.-L. Zang & M.R. Walter, 1992 †
  600. Genus Palaiosphaeridium H. Górka, 1980 †
  601. Genus Palanaea S.C.D. Sah & R.K. Kar, 1974 †
  602. Genus Paleamorpha Y.S. Sin & K.Z. Liu, 1978 †
  603. Genus Paleasphaeridium C.-Y. Yin, 1985 †
  604. Genus Paleopedicystus F.L. Staplin, 1961 †
  605. Genus Paleoperisaccus †
  606. Genus Paleoraphidia W. Brenner & C.B. Foster, 1994 †
  607. Genus Paniculaferum M.A. Miller, 1991 †
  608. Genus Papiliotypus H. Hashemi & G. Playford, 1998 †
  609. Genus Papilliferum L.M. Yin, 1987 †
  610. Genus Papillomembrana N. Spjeldnaes, 1963 †
  611. Genus Papinochium M. Ters & G. Deflandre, 1966 †
  612. Genus Papulogabata G. Playford in Playford & Dring, 1981 †
  613. Genus Parachitina A. Eisenack, 1937 †
  614. Genus Parahorologinella C.-Q. He & W.-B. Li, 2004 †
  615. Genus Paralecaniella I.C. Cookson & A. Eisenack, 1970 †
  616. Genus Pararhombodella J. Xu, Z. Pan, Y. Yang, Y. Zhu & N. Fan, 1997 †
  617. Genus Parashouhsienia S. Sun, 2006 †
  618. Genus Pardaminela M. del Carmen R. Díez & F.H. Cramer, 1977 †
  619. Genus Passalosphaera G. Playford & R. Wicander, 1988 †
  620. Genus Pavlovskya S.N. Naumova in Naumova & Pavlovsky, 1961 †
  621. Genus Pennatosphaeridium K. Grey, 2005 †
  622. Genus Peramorpha F. Martin in Martin & Dean, 1983 †
  623. Genus Percultisphaera T.R. Lister, 1970 †
  624. Genus Peregrinixia D. Habib & S.D. Knapp, 1982 †
  625. Genus Perforela M. del Carmen R. Díez & F.H. Cramer, 1977 †
  626. Genus Perissolagonella A.R. Loeblich Jr. & E.R. Wicander, 1976 †
  627. Genus Perticiella C.-Q. He, R.-Q. Gao & X.-Y. Qiao, 1992 †
  628. Genus Pertusidisca M.A. Miller, M. Vecoli & C. Cesari, 2017 †
  629. Genus Pertusisphaeridium R.E. Turner, 1986 †
  630. Genus Petaloferidium S.R. Jacobson, 1978 †
  631. Genus Peteinosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  632. Genus Petrovina S. Loboziak, J.H.G. Melo, L.P. Quadros & M. Streel, 1997 †
  633. Genus Phenacoon M. Vecoli & G. Playford, 1997 †
  634. Genus Pheoclosterium H. Tappan & A.R. Loeblich Jr., 1972 †
  635. Genus Phoenisphaeridium J. Deunff in Eisenack et al., 1976 †
  636. Genus Picostella F.H. Cramer, B. Allam, W.H. Kanes & M. del C.R. Díez, 1974 †
  637. Genus Pictonicopila G. Deflandre & M. Ters, 1966 †
  638. Genus Piliferosphaera A.R. Loeblich Jr., 1970 †
  639. Genus Pinocchiodinium S. Torricelli, 2000 †
  640. Genus Piperodinium P.J. Mudie in Scott et al., 1984 †
  641. Genus Pirea M. Vavrdová, 1972 †
  642. Genus Piyuancunella †
  643. Genus Plagasphaera L.-M. Yin, K. Wang, Z. Shen & Y.-L. Zhao, 2021 †
  644. Genus Planctonites W. Krutzsch, 1977 †
  645. Genus Platycystidia I.C. Cookson & A. Eisenack, 1960 †
  646. Genus Plicatofusa L.I. Sheshegova, 1984 †
  647. Genus Plicatosphaeridium N.J. Butterfield, 2005 †
  648. Genus Podoliella B.V. Timofeev, 1973 †
  649. Genus Podolina T.N. Hermann in Timofeev et al., 1976 †
  650. Genus Poikilofusa F.L. Staplin, J. Jansonius & S.A. Pocock, 1965 †
  651. Genus Pololeptus L. Yin in Yin & Sun, 1994 †
  652. Genus Polonosphaeridium H. Górka, 1987 †
  653. Genus Polyacuata †
  654. Genus Polyancistrodorus A.R. Loeblich Jr. & H. Tappan, 1969 †
  655. Genus Polydeunffia F.H. Cramer, 1970 †
  656. Genus Polyedrina L.P. de Quadros, 1986 †
  657. Genus Polyedrosphaeridium B.V. Timofeev, 1962 †
  658. Genus Polyedryxium J. Deunff, 1954 †
  659. Genus Polyforama S.N. Naumova in Pykhova, 1969 †
  660. Genus Polygoniomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  661. Genus Polygonium M. Vavrdová, 1966 †
  662. Order Polygonomorphitae †
  663. Genus Polynucella Y.-S. Xing & G.-Z. Liu, 1973 †
  664. Genus Polyplanifer F.H. Cramer, 1964 †
  665. Genus Polyporata Y.-S. Xing & G.-Z. Liu, 1973 †
  666. Genus Polyvalvaphycus Q.-L. Luo & F.-X. Wang in Luo et al., 1982 †
  667. Genus Porusphaera Jiabo, 1978 †
  668. Genus Praedermocarpites S. Ouyang, L. Yin & Z. Li, 1974 †
  669. Genus Pratulasphaera R. Wicander & G. Playford, 1985 †
  670. Genus Priscogalea J. Deunff, 1961 †
  671. Genus Priscotheca J. Deunff, 1961 †
  672. Genus Prismatocystis D. Habib, 1969 †
  673. Order Prismatomorphitae †
  674. Genus Prolaminarites ? L.N. Iltchenko, 1972 †
  675. Genus Prolatoforma N.S. Mikhailova in Mikhailova & Podkovyrov, 1992 †
  676. Genus Prolixosphaeridiopsis N.M. Hogg & D.A. Bailey, 1997 †
  677. Genus Proteolobus G.D. Wood, 1997 †
  678. Genus Proteus A.M. Stanevich, ? 2007 †
  679. Genus Protoarchaeosacculina S.N. Naumova, 1960 †
  680. Genus Protoleiosphaeridium B.V. Timofeev ex B.V. Timofeev, 1960 †
  681. Genus Protolophosphaeridium B.V. Timofeev, 1963 †
  682. Genus Protomassulina S.N. Naumova, 1968 †
  683. Genus Protomycterosphaeridium B.V. Timofeev, 1963 †
  684. Genus Protonucellosphaeridium B.V. Timofeev, 1963 †
  685. Genus Protoocridosphaeridium B.V. Timofeev, 1962 †
  686. Genus Protosphaeridium B.V. Timofeev, 1966 †
  687. Genus Prototracheites S. Ouyang, L. Yin & Z. Li, 1974 †
  688. Genus Prototrachysphaeridium B.V. Timofeev, 1963 †
  689. Genus Prototrematosphaeridium B.V. Timofeev, 1962 †
  690. Genus Prototylosphaeridium B.V. Timofeev, 1963 †
  691. Genus Protovavososphaeridium B.V. Timofeev, 1963 †
  692. Genus Protozonosphaeridium B.V. Timofeev, 1963 †
  693. Genus Psenotopus H. Tappan & A.R. Loeblich Jr., 1972 †
  694. Genus Pseudodiacrodium Y.S. Sin & K.Z. Liu, 1978 †
  695. Genus Pseudofavososphaera Y. Xing, 1982 †
  696. Genus Pseudofromea D. Burger, 1980 †
  697. Genus Pseudolunulidia I.M. Brito & A.S. Santos, 1965 †
  698. Genus Pseudomasia J. De Coninck, 1969 †
  699. Genus Pseudosaccatina Naumova [date?] †
  700. Genus Pseudotasmanites V.V. Kirjanov, 1974 †
  701. Genus Pseudozonosphaera Xing & Liu, 1973 †
  702. Genus Pseudozonosphaeridium Andreeva, 1966 †
  703. Genus Psilosphaera S.C.D. Sah & R.K. Kar, 1974 †
  704. Genus Pterocystidiopsis G. Deflandre, 1938 †
  705. Genus Pteroidea L.I. Sheshegova, 1975 †
  706. Order Pteromorphitae †
  707. Genus Pterospermopsimorpha B.V. Timofeev, 1966 †
  708. Genus Pterotosphaerula F.H. Cramer, 1966 †
  709. Genus Pulvinosphaeridium A. Eisenack, 1954 †
  710. Genus Pustulisphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  711. Genus Pustulisphaeridium E.R. Wicander, 1974 †
  712. Genus Puteoscortum E.R. Wicander & A.R. Loeblich Jr., 1977 †
  713. Genus Pylantios M. Quintavalle & G. Playford, 2006 †
  714. Genus Pyloferites L.P. de Quadros, 1999 †
  715. Genus Pytinomorpha G. Playford & R. Wicander, 1988 †
  716. Genus Quadraditum F.H. Cramer, 1964 †
  717. Genus Quadrina J.P. Bujak in J.P. Bujak, C. Downie, G.L. Eaton & G.L. Williams, 1980 †
  718. Genus Quadruilobus H. Tappan & A.R. Loeblich Jr., 1972 †
  719. Genus Qualeamorpha †
  720. Genus Quantostrobilium W.A.S. Sarjeant & R.P.W. Stancliffe, 1996 †
  721. Genus Quisquilites L.R. Wilson & J.B. Urban, 1963 †
  722. Genus Radialetes G. Playford, 1963 †
  723. Genus Radialorhachia Y. Xiao & X. Hu in Xiao et al., 1996 †
  724. Genus Radiata A.M. Stanevich, 1987 †
  725. Genus Radiatosphaera T.N. Hermann in Hermann & Podkovyrov, 2002 †
  726. Genus Radiophycus F. Wang, 1985 †
  727. Genus Raphesphaera N.A. Volkova, 1990 †
  728. Genus Raplasphaera A. Uutela & R. Tynni, 1991 †
  729. Genus Recticystis Schrank, 2003 †
  730. Genus Retialetes F.L. Staplin, 1960 †
  731. Genus Reticella H. Agić, 2015 †
  732. Genus Reticulatopora N. Wang, 1989 †
  733. Genus Reticultum †
  734. Genus Retiforma N.S. Mikhailova in Mikhailova & Podkovyrov, 1987 †
  735. Genus Retinarites S. Ouyang, L. Yin & Z. Li, 1974 †
  736. Genus Retisphaera W. Li, 1984 †
  737. Genus Retisphaeridium F.L. Staplin, J. Jansonius & S.A. Pocock, 1965 †
  738. Genus Revinotesta M. Vanguestaine, 1974 †
  739. Genus Rhachosoarium H. Tappan & A.R. Loeblich Jr., 1972 †
  740. Genus Rhacobrachion K.J. Dorning, 1981 †
  741. Genus Rhaetosphaeridium W.A.S. Sarjeant & M. Vavrdová, 1997 †
  742. Genus Rhiptosocherma A.R. Loeblich Jr. & H. Tappan, 1978 †
  743. Genus Rhizophocum †
  744. Genus Rhombodella I.C. Cookson & A. Eisenack, 1962 †
  745. Genus Rhopaliophora H. Tappan & A.R. Loeblich Jr., 1972 †
  746. Genus Riculasphaera A.R. Loeblich Jr. & W.S. Drugg, 1968 †
  747. Genus Rifenita S.N. Naumova, 1968 †
  748. Genus Rimosicysta N.G. Marshall, 1989 †
  749. Genus Rosella A.M. Stanevitch in Jankauskas, 1989 †
  750. Genus Rugasphaera Jiabo, 1978 †
  751. Genus Rugidinium S.A.J. Pocock & W.A.S. Sarjeant in Pocock, 1972 †
  752. Genus Rugocystis B.S. Venkatachala, L.L. Bhandari, A.N. Chaube & M.S. Rawat, 1974 †
  753. Genus Rugosopsophosphaera S.N. Naumova, 1964 †
  754. Genus Rugospinasphaera P. Liu & C. Yin, 2005 †
  755. Genus Rugulasphaeridium D.C. Bharadwaj, R.S. Tiwari & B.S. Venkatachala, 1971 †
  756. Genus Rugulidium F.H. Cramer, W.H. Kanes, M. del C.R. Díez & R.A. Christopher, 1974 †
  757. Genus Ruvalia N.A. Volkova, 1999 †
  758. Genus Saccosphaera N. Baltes, 1969 †
  759. Genus Sacculidium C. Ribecai, E. Raevskaya & M. Tongiorgi, 2002 †
  760. Genus Safirotheca M. Vavrdová, 1989 †
  761. Genus Sagatum M. Vavrdová & J. Bek, 2001 †
  762. Genus Saharidia A. Combaz, 1968 †
  763. Genus Saharifusa E.D. Pöthe de Baldis, 1997 †
  764. Genus Salopidium K.J. Dorning, 1981 †
  765. Genus Sandbica Raevskaya & Iskül, 2024 †
  766. Genus Sanduina N. Wang, 1989 †
  767. Genus Sangarella A.F. Fradkina & E.B. Pestchevitskaya in Pestchevitskaya & Fradkina, 2001 †
  768. Genus Sarmenta M.B. Gnilovskaja in Keller & Rozanov, 1979 †
  769. Genus Satka T.V. Jankauskas, 1979 †
  770. Genus Saturnus F.H. Cramer, 1966 †
  771. Genus Savitrinia E. Nagy, 1966 †
  772. Genus Scalenadiacrodium T.L. Potter, B.E. Pedder & S. Feist-Burkhardt, 2012 †
  773. Genus Scaphita B.V. Timofeev, 1973 ex Timofeev in Timofeev et al., 1976 †
  774. Genus Scaphospinosa B.V. Timofeev in Timofeev et al., 1976 †
  775. Genus Scheplelevia Aristova, 1971 †
  776. Genus Schismatosphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  777. Genus Schizocystia I.C. Cookson & A. Eisenack, 1962 †
  778. Genus Schizodiacrodium G. Burmann, 1968 †
  779. Genus Schizofusa Y. Yan, 1983 †
  780. Genus Schizosporites †
  781. Genus Schizovalvia Yan, 1985 †
  782. Genus Scuticabolus A.R. Loeblich III, 1967 †
  783. Genus Senzeillea F. Stockmans & Y. Willière, 1969 †
  784. Genus Sertulasphaera †
  785. Genus Sertulidium M. Quintavalle & G. Playford, 2006 †
  786. Genus Shorikhosphaeridium Sergeev, 2001 †
  787. Genus Sibiriella Z.K. Fajzulina in Akulcheva et al., 1981 †
  788. Genus Sicyoidium C.-Q. He, 1980 †
  789. Genus Sicyomorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  790. Genus Simia N.S. Mikhailova & T.V. Jankauskas in Jankauskas, 1989 †
  791. Genus Simsangia S.K. Baksi, 1962 †
  792. Genus Singraulipollenites V. Sinha, 1969 †
  793. Genus Sinianella Yin, 1980 †
  794. Genus Sinosphaera Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 †
  795. Genus Sirius M.A. Fombella Blanco, 1978 †
  796. Genus Skiagia C. Downie, 1982 †
  797. Genus Sol F.H. Cramer, 1964 †
  798. Genus Solatisphaera E.R. Wicander & A.R. Loeblich Jr., 1977 †
  799. Genus Solisphaeridium F.L. Staplin, J. Jansonius & S. Pocock, 1965 †
  800. Genus Somphophragma Playford in Playford & Dring, 1981 †
  801. Genus Somphosphaeridium Zang & Walter, 1992 †
  802. Genus Sphaeranasillos C.W. Allison in Allison & Awramik, 1989 †
  803. Genus Sphaeromorpha N. Baltes, 1969 †
  804. Order Sphaeromorphitae †
  805. Genus Sphaeroporalites D.O. Hemer & P.W. Nygreen, 1967 †
  806. Genus Sphaerosomatites Rothpletz, 1880 †
  807. Genus Spicadinium D.J. Batten & J.K. Lister, 1988 †
  808. Genus Spinasphaera R.K. Kar & R.K. Saxena, 1976 †
  809. Genus Spinuliferites T.-C. Huang, 1981 †
  810. Genus Spiromorpha Yin, Yuan, Meng & Hu, 2005 †
  811. Genus Spongocystia K.L. Segroves, 1967 †
  812. Genus Spumiosina Lopukhin, 1966 †
  813. Genus Spumosata Naumova †
  814. Genus Spumososphaera Naumova †
  815. Genus Spurimoyeria E.R. Wicander & A.R. Loeblich Jr., 1977 †
  816. Genus Staplinium Jansonius, 1962 †
  817. Genus Stellarossica V.G. Vorob'eva & V.N. Sergeev, 2018 †
  818. Genus Stellechinatum R.E. Turner, 1984 †
  819. Genus Stelliferidium J. Deunff, H. Górka & R. Rauscher, 1974 †
  820. Genus Stellinium S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  821. Genus Stelomorpha Yin, 1994 †
  822. Genus Stenozonoligotriletes B.V. Timofeev, 1958 †
  823. Genus Stephanodiacrodium Vavrdová, 1986 †
  824. Genus Sticcasphaeridium Zang & Walter, 1992 †
  825. Genus Stictosoma Wicander, Playford & Robertson, 1999 †
  826. Genus Stictosphaeridium B.V. Timofeev, 1966 †
  827. Genus Strablosphaeridium H. Górka, 1980 †
  828. Genus Striatostellula W.A.S. Sarjeant & R.P.W. Stancliffe, 1994 †
  829. Genus Striatotheca G. Burmann, 1970 †
  830. Genus Stylodiniopsis A. Eisenack, 1954 †
  831. Genus Sulcatosphaeridium S.N. Naumova ex N.I. Umnova in N.I. Umnova & B.A. Yakovlev, 1970 †
  832. Genus Sulcusicystis Y.-H. Bai in Y.-H. Bai et al., 1983 †
  833. Genus Sylvanidium A.R. Loeblich Jr., 1970 †
  834. Genus Symplassosphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
  835. Genus Synsphaeridium Eisenack, 1965 †
  836. Genus Synsphaeridium B.V. Timofeev, 1966 †
  837. Genus Tabulimicrocystis D. Habib & S.D. Knapp, 1982 †
  838. Genus Tadasum Raevskaya & Iskül, 2024 †
  839. Genus Taeniosphaera P. Liu & C. Yin, 2005 †
  840. Genus Taeniosphaeridium A. Uutela & R. Tynni, 1991 †
  841. Genus Tappania Yin, 1997 †
  842. Genus Tariccrodium P. Pittau, 1995 †
  843. Genus Tchuja A.M. Stanevitch in Khomentovsky & Shenfil, 1986 †
  844. Genus Tectitheca G. Burmann, 1968 †
  845. Genus Tectocorpidium Jiabo, 1978 †
  846. Genus Teichertodinium S.A.J. Pocock & W.A.S. Sarjeant, 1972 †
  847. Genus Teleostomata M. Kondas, P. Filipiak & P. Breuer, 2022 †
  848. Genus Temporina S.C.D. Sah & R.K. Kar, 1974 †
  849. Genus Tenuirica Playford & Wicander, 1988 †
  850. Genus Teophipolia V.V. Kirjanov in Keller & Rozanov, 1979 †
  851. Genus Tessellaesphaera C.B. Foster, 1979 †
  852. Genus Tetrabrachiophora A. Eisenack, 1954 †
  853. Genus Tetraedrixium B.V. Timofeev, 1973 †
  854. Genus Tetraniveum Vavrdová, 1976 †
  855. Genus Thymadora Clendening & Wood, 1981 †
  856. Genus Thysanoprobolus A.R. Loeblich Jr. & H. Tappan, 1970 †
  857. Genus Timanisphaera N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  858. Genus Timofeevia Vanguestaine, 1978 †
  859. Genus Tongzia Li, 1987 †
  860. Genus Tophoporata Pykhova, 1973 †
  861. Genus Tornacia F. Stockmans & Y. Willière, 1966 †
  862. Genus Toroformis Lopukhin, 1972 †
  863. Genus Trachyaletes B.V. Timofeev †
  864. Genus Trachyarachnitum Andreeva, 1966 †
  865. Genus Trachydiacrodium B.V. Timofeev ex G. Deflandre & M. Deflandre-Rigaud, 1962 †
  866. Genus Trachydiscina Naumova †
  867. Genus Trachyhystrichosphaera B.V. Timofeev & T.N. Hermann in Timofeev et al., 1976 †
  868. Genus Trachyminuscula Naumova, 1961 †
  869. Genus Trachyoligotriletes B.V. Timofeev, 1958 ex Timofeev, 1960 †
  870. Genus Trachypsophosphaera Naumova, 1964 †
  871. Genus Trachyrytidodiacrodium B.V. Timofeev, 1959 †
  872. Genus Trachysphaeridium B.V. Timofeev ex B.V. Timofeev, 1966 †
  873. Genus Trachytriletes Naumova, 1939 †
  874. Genus Tranvikium Tynni, 1982 †
  875. Genus Trematoligotriletum B.V. Timofeev, 1959 †
  876. Genus Trematophora Eisenack, 1965 †
  877. Genus Trematosphaeridium B.V. Timofeev, 1959 †
  878. Genus Tresarcus Tropepi & Ribecai, 2000 †
  879. Genus Tretopilula G.K. Colbath, 1990 †
  880. Genus Tretosohyrtana G.K. Colbath, 1979 †
  881. Genus Trialetes Naumova †
  882. Genus Triangulina F.H. Cramer, 1964 †
  883. Genus Triangumorpha Xing & Liu, 1973 †
  884. Genus Tribulidium M. Quintavalle & G. Playford, 2006 †
  885. Genus Tricholigotriletum B.V. Timofeev, 1959 †
  886. Genus Trichosphaeridium B.V. Timofeev, 1966 †
  887. Genus Trilobatum X. Fang, 1987 †
  888. Genus Triporina S.N. Naumova, 1939 †
  889. Genus Truncatisphaeridium Riding & Duxbury, 1993 †
  890. Genus Trunculumarium A.R. Loeblich Jr. & H. Tappan, 1976 †
  891. Genus Tuberculum E.Y. Golubkov, I.M. Bobrovskiy, E.A. Kushim & Y.V. Plotkina, 2021 †
  892. Genus Tubulifera Schumacker-Lambry, 1978 †
  893. Genus Tubulosphaera Palacios in Palacios & Moczydlowska, 1998 †
  894. Genus Tubulospina R.J. Davey, 1970 †
  895. Genus Tunisphaeridium J. Deunff & Evitt, 1968 †
  896. Genus Turuchanica Rudavskaya, 1964 †
  897. Genus Tyloligotriletum B.V. Timofeev, 1959 †
  898. Genus Tylosphaeridium B.V. Timofeev, 1966 †
  899. Genus Tylotopalla A.R. Loeblich Jr., 1970 †
  900. Genus Tyrannus G.D. Wood & A.O. Tekbali, 1987 †
  901. Genus Ulanisphaeridium A. McMinn, 1982 †
  902. Genus Umbellasphaeridium S. Jardiné, A. Combaz, L. Magloire, G. Peniguel & G. Vachey, 1972 †
  903. Genus Uncinisphaera E.R. Wicander, 1974 †
  904. Genus Unellium R. Rauscher, 1969 †
  905. Genus Uniferata Naumova †
  906. Genus Uniporata Naumova in Pykhova, 1969 †
  907. Genus Uranidium Jacobson & Achab, 1985 †
  908. Genus Urasphaera M. Nagovitsin & K.E. Moczydłowska, 2012 †
  909. Genus Valeria T.V. Jankauskas, 1982 †
  910. Genus Valvimorpha Yan, 1985 †
  911. Genus Vandalosphaeridium Vidal, 1981 †
  912. Genus Vanguestainidium Steemans, Javaux, Breuer, Le Hérissé, Marshall & De Ville De Goyet, 2009 †
  913. Genus Variolidium R.E. Turner, 1991 †
  914. Genus Variomargosphaeridium Zang & Walter, 1992 †
  915. Genus Vavososphaeridium B.V. Timofeev, 1959 †
  916. Genus Velatasphaera Miller & Williams, 1988 †
  917. Genus Veliferites I.M. Brito, 1967 †
  918. Genus Ventilabrumorpha F. Wang, G. Zhou & Q. Chen, 1980 †
  919. Genus Vermiculatisphaera Miller & Eames, 1982 †
  920. Genus Verrucidium D. Habib & S.D. Knapp, 1982 †
  921. Genus Verrucosphaera H. Górka, 1970 †
  922. Genus Veryhachium J. Deunff, 1954 †
  923. Genus Vesiculosphaerina Lopukhin, 1966 †
  924. Genus Villosacapsula A.R. Loeblich Jr. & H. Tappan, 1976 †
  925. Genus Virgatasporites A. Combaz, 1968 †
  926. Genus Visbysphaera T.R. Lister, 1970 †
  927. Genus Vogtlandia G. Burmann, 1970 †
  928. Genus Volkovia C. Downie, 1982 †
  929. Genus Vologdovia Shepeleva in Klevtsova & Shepeleva, 1980 †
  930. Genus Vulcanisphaera J. Deunff, 1961 †
  931. Genus Waaslandia De Schepper, Head & Louwye, 2004 †
  932. Genus Weissiella N.G. Vorob'eva, V.N. Sergeev & A.H. Knoll, 2009 †
  933. Genus Wicanderidium W.A.S. Sarjeant & Vavrdová, 1997 †
  934. Genus Wilsonastrum Jansonius, 1962 †
  935. Genus Winwaloeusia J. Deunff, 1977 †
  936. Genus Wrensnestia K.J. Dorning, 1981 †
  937. Genus Wujiangella Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  938. Genus Wuroia L.E. Stover & R. Helby, 1987 †
  939. Genus Xanthocysta R.L. Ravn & D.K. Goodman, 2017 †
  940. Genus Yalisphaeridium L. Gao, 1986 †
  941. Genus Yichangia L.M. Yin, 1987 †
  942. Genus Yinia N. Wang, 1989 †
  943. Genus Yonyangella Li, Chen, Lipps, Gao, Chi & Wu, 2007 †
  944. Genus Yurtusia L. Dong, S. Xiao, B. Shen, C. Zhou, G. Li & J. Yao, 2009 †
  945. Genus Yushengia P. Liu, S. Xiao, C. Yin, S. Chen, C. Zhou & M. Li, 2014 †
  946. Genus Zonooidium B.V. Timofeev, 1957 †
  947. Genus Zonosphaeridium B.V. Timofeev ex B.V. Timofeev, 1973 †
  948. Genus Baiomeniscus A.R. Loeblich Jr., 1970 † (uncertain > nomen dubium)
  949. Genus Chamaesiphonites P. Palik, 1966 † (uncertain > nomen dubium)
  950. Genus Eomicrhystridium G. Deflandre, 1968 † (uncertain > nomen dubium)
  951. Genus Palhistiodinia G. Deflandre, 1939 † (uncertain > nomen dubium, type specimen unidentifiable)
  952. Genus Phormidites P. Palik, 1966 † (uncertain > nomen dubium)
  953. Genus Cicatricosisphaera Yan, 1984 † (unaccepted > nomen nudum)
  954. Genus Costatiplicata C. Downie, 1974 † (unaccepted > nomen nudum, name only, given in quotes, no description)
  955. Genus Cylindraceusa Yan, 1984 † (unaccepted > nomen nudum)
  956. Genus Ephippimorpha Yan, 1984 † (unaccepted > nomen nudum)
  957. Genus Eucopsisphaera Wang, Xiao, Shi, Xu & Li, 1980 † (unaccepted > nomen nudum)
  958. Genus Fülöpia E. Nagy, 1963 † accepted as Fülöpia E. Nagy, 1965 † accepted as Fueloepia E. Nagy, 1965 † (unaccepted > nomen nudum, ?nomen nudum, also original incorrect spelling)
  959. Genus Latoporata S.N. Naumova ex N.I. Umnova in Umnova & Yakovlev, 1970 † (unaccepted > nomen nudum, no genus description)
  960. Genus Lignum Y.-S. Xing, 1962 † (unaccepted > nomen nudum)
  961. Genus Malopatomia M.S. Yakschin, 2002 † (unaccepted > nomen nudum, no Latin or English diagnosis)
  962. Genus Mediocorpore ? S.F. Oliveira, 1991 (unaccepted > nomen nudum)
  963. Genus Plicatosphaera Potter in Baudelot & Géry, 1979 † (unaccepted > nomen nudum)
  964. Genus Polyporata Pykhova, 1966 † (unaccepted > nomen nudum, holotype not designated)
  965. Genus Pterospermopsimorpha B.V. Timofeev, 1962 † accepted as Pterospermopsimorpha B.V. Timofeev, 1966 † (unaccepted > nomen nudum)
  966. Genus Aquadulcum R. Harland & W.A.S. Sarjeant, 1970 † accepted as Cobricosphaeridium R. Harland & W.A.S. Sarjeant, 1970 † (synonym)
  967. Genus Archaeopsophosphaera S.N. Naumova, 1968 † accepted as Asperatopsophosphaera D.A. Schepeleva ex E.A. Assejeva in P.L. Shulga, 1976 † (Not validly published)
  968. 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 †
  969. Genus Armstrongisphaera Kozur, 1986 † accepted as Papinochium M. Ters & G. Deflandre, 1966 †
  970. Genus Carnarvonia I.C. Cookson & A. Eisenack, 1982 † accepted as Narcarvonia M.E. Dettmann & G. Playford, 1994 †
  971. Genus Chamosphaera G.C. Geng, 1985 † (Not validly published)
  972. Genus Cingulosphaeridium A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
  973. Genus Deflandridium E. Nagy, 1969 † accepted as Planctonites W. Krutzsch, 1977 † (synonym)
  974. Genus Dilatiphaera T.R. Lister, 1970 † accepted as Dilatisphaera T.R. Lister, 1970 † (misspelling in Nomen. Zool./Zoological Record)
  975. Genus Ellipticoporata A.S. Lopuchin in M.I. Neustadt, 1966 † (Not validly published)
  976. Genus Fusicoccus K.E. Nagovitsin, 2000 † (Not validly published)
  977. Genus Gemma V.A. Luchinina in I.T. Zhuravleva et al., 1982 † (Not validly published)
  978. Genus Hogklintia K.J. Dorning, 1981 † accepted as Hoegklintia K.J. Dorning, 1981 † (name as originally published, but not in prevailing usage)
  979. Genus Hystrichosphaeridium S.N. Naumova, 1968 † (Not validly published)
  980. Genus Jilinella Yin, 1984 † (Not validly published (?))
  981. Genus Leiodiscina S.N. Naumova, 1968 † (Not validly published)
  982. Family Leiofusidae Eisenack, 1938 † accepted as Acritarcha † (unrecognised family)
  983. Genus Lophominuscula S.N. Naumova, 1960 † (Not validly published)
  984. Genus Megasacculina S.N. Naumova, 1960 † (Not validly published)
  985. Genus Micrhystridium S.N. Naumova, 1968 † (Not validly published)
  986. Genus Microconcentrica S.N. Naumova, 1960 † (Not validly published)
  987. Genus Neofentonia H. Özdikmen, 2009 † accepted as Fentonia D.A. Bailey & N.M. Hogg, 1995 † accepted as Limbicysta N.G. Marshall, 1989 † (superfluous replacement name)
  988. Genus Oscillatorites P. Palik, 1966 †
  989. Genus Ova † accepted as Ovum A. Eisenack, 1931 †
  990. Genus Pseudomaranhites L.P. Quadros, 1996 † accepted as Maranhites I.M. Brito, 1965 † (synonym)
  991. Genus Schizodiocrodium G. Burmann, 1968 † accepted as Schizodiacrodium G. Burmann, 1968 †
  992. Genus Spumiosa S.N. Naumova, 1968 † (Not validly published)
  993. Genus Spumosina S.N. Naumova, 1968 † (Not validly published)
  994. Genus Svenkodinium Gedl, 1996 † accepted as Nannobarbophora D. Habib & S.D. Knapp, 1982 † (not validly published)
  995. Genus Tetradinium Vavrdová, 1973 † accepted as Tetraniveum Vavrdová, 1976 †
  996. Genus Tetrasphaera B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 †
  997. Genus Tritonites N.G. Marshall & A.D. Partridge, 1988 † accepted as Paucilobimorpha J. de Coninck, 1986 †
  998. Genus Vavrdovella A.R. Loeblich Jr. & H. Tappan, 1976 † accepted as Tetraniveum Vavrdová, 1976 †
  999. Genus Vesiculosphaera I.A. Siverzeva & N.A. Volkova in N.A. Volkova & I.A. Siverzeva, 1991 †
  1000. Genus Acanthomesotriletes † (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 (2024). Acritarcha †. Accessed at: https://www.irmng.org/aphia.php?p=taxdetails&id=123 on 2025-03-16
Date
action
by
2010-05-31 22:00:00Z
created
Rees, Tony
2011-12-31 23:00:00Z
changed
Rees, Tony
2017-03-18 09:45:17Z
changed
Rees, Tony
2023-04-28 19:03:33Z
changed
Rees, Tony

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] 
Unreviewed
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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