Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Acritarcha (acritarchs)

Taxonomy
Acritarcha was named by Evitt (1963). It is considered to be a form taxon.

It was assigned to Eukaryota by Taylor et al. (2008).

Subtaxa
Acanthodiacrodium, Acanthorytidodiacrodium, Acanthozonodiacrodium, Angularia, Appendisphaera, Applanopsis, Archaeodiscina, Archaeofavosina, Archaeohystrichosphaeridium, Archaeoperisaccus, Archaeopertusina, Artemisiocysta, Ascostomocystis, Asperatopsophosphaera, Asseserium, Asteridium, Bacillidinium, Bacisphaeridium, Baltisphaeridium, Brochopsophosphaera, Buedingiisphaeridium, Ceratocystidiopsis, Ceratosphaeridium, Chuaria, Circulisporites, Cirrifera, Clavaticystis, Codonia, Codoniella, Comasphaeridium, Concentricystes, Coronopsis, Cristallinium, Cyclodictyon, Cyclopsiella, Cymatiosphaera, Cymatiosphaeroides, Dasydiacrodium, Dasyrytidodiacrodium, Deunffia, Dictyosphaeridium, Dictyotidium, Dimastigobolus, Diplofusa, Disphaeria, Domasia, Domasiella, Epicephalopyxis, Estiastra, Eupoikilofusa, Filisphaeridium, Fromea, Gemmuloides, Gorgonisphaeridium, Granodiscus, Granomarginata, Halodinium, Halophoridia, Heliosphaeridium, Kildinella, Korilophyton, Korojonia, Lacunalites, Leiofusa, Leiomarginata, Leiominuscula, Leiopsophosphaera, Leiosphaera, Leiosphaeridium, Limbicysta, Lophodiacrodium, Lophominuscula, Lophorytidodiacrodium, Lophosphaeridium, Lophozonodiacrodium, Lunulidia, Lusatia, Margominuscula, Mecsekia, Megasacculina, Membranolimbus, Membranosphaera, Micrhystridium, Microconcentrica, Microforaminiferal, Microrugosina, Multifronsphaeridium, Nucellosphaeridium, Nummus, Ocalasphaera, Odontothrix, Ooidium, Operculites, Ophiobolus, Orygmatosphaeridium, Palaeobion, Palaeocryptidium, Palaeostomocystis, Paucilobimorpha, Peteinosphaeridium, Piperodinium, Platycystidia, Poikilofusa, Polyedrosphaeridium, Priscotheca, Protoarchaeosacculina, Protocridosphaeridium, Protoleiosphaeridium, Protosphaeridium, Prototrematosphaeridium, Pterocystidiopsis, Pterospermopsis, Pterosphaeridia, Quadrina, Quisquilites, Recticystis, Retisphaeridium, Rhombodella, Schismatosphaeridium, Schizocystia, Schizofusa, Simia, Simsangia, Singraulipollenites, Solisphaeridium, Spicadinium, Staplinium, Stictosphaeridium, Stylodiniopsis, Symplassosphaeridium, Synsphaeridium, Tanarium, Tetrabrachiophora, Trachydiacrodium, Trachyhystrichosphaera, Trachysphaeridium, Trematosphaeridium, Triangulopsis, Trigonopyxidia, Trigonopyxis, Variomargosphaeridium, Vavososphaeridium, Veryhachium, Wilsonastrum, Zonooidium, Zonosphaeridium

Synonyms
Synonymy list
YearName and author
1959Archaeohystrichosphaeridium Timofeev
1959Dasyrytidodiacrodium Timofeev
1960Microrugosina Naumova
1963Acritarcha Evitt
1963Asperatopsophosphaera Shepeleva and Timofeev
2008Acritarcha Taylor et al. p. 1027

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
Life
Eukaryota()
RankNameAuthor
AcritarchaEvitt 1963
AcritarchaEvitt 1963

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. †Acritarcha Evitt 1963 [acritarchs]
show all | hide all
G. †Acanthodiacrodium Timofeev 1958
+
G. †Acanthorytidodiacrodium Timofeev 1959
G. †Acanthozonodiacrodium Timofeev 1959
G. †Angularia Samojlovic 1961
+
Angularia viridula Samojlovic 1961
G. †Appendisphaera Moczydlowska et al. 1993
+
Appendisphaera fragilis Moczydlowska et al. 1993
Appendisphaera grandis Moczydlowska et al. 1993
Appendisphaera tabifica Moczydlowska et al. 1993
Appendisphaera tenuis Moczydlowska et al. 1993
G. †Applanopsis Doering 1961
+
Applanopsis dampieri Balme 1957
Applanopsis granulatus Venkatachala and Kar 1969
Applanopsis ovatus Venkatachala and Kar 1969
Applanopsis punctatus Venkatachala and Kar 1969
G. †Archaeodiscina Naumova 1960
+
Archaeodiscina granulata Naumova 1960
G. †Archaeofavosina Naumova 1960
+
Archaeofavosina naumovae Maithy 1975
Archaeofavosina reticulata Maithy and Shukla 1977
Archaeofavosina simplex Naumova 1960
Archaeofavosina sinuta Maithy 1975
G. †Archaeoperisaccus Naumova 1960
+
G. †Archaeopertusina Naumova 1960
+
Archaeopertusina atava Naumova 1960
G. †Artemisiocysta Benedek 1972
G. Ascostomocystis Drugg and Loeblich 1967
G. †Asseserium Moczydłowska and Nagovitsin 2012
+
Asseserium fusulentum Moczydłowska and Nagovitsin 2012
Asseserium pyramidalis Moczydłowska and Nagovitsin 2012
G. †Asteridium Moczydlowska 1991
G. †Bacillidinium Habib 1982
+
Bacillidinium partitum Schrank 2003
G. †Bacisphaeridium Eisenack 1962
+
Bacisphaeridium bacifer Eisenack 1962
G. †Baltisphaeridium Eisenack 1958
+
Baltisphaeridium acuminatum Kolosova 1991
G. †Brochopsophosphaera Shepeleva and Timofeev 1963
+
Brochopsophosphaera minimus Shepeleva and Timofeev 1963
G. †Buedingiisphaeridium Schaarschmidt 1963
+
Buedingiisphaeridium permicum Schaarschmidt 1963
G. †Ceratocystidiopsis Deflandre 1937
+
Ceratocystidiopsis ludbrooki Cookson and Eisenack 1958
Ceratocystidiopsis simplex Deflandre 1937
G. †Ceratosphaeridium Grey 2005
+
G. †Chuaria Walcott 1899
+
Chuaria circularis Walcott 1899
Chuaria pendjariensis Amard 1997
G. †Circulisporites de Jersey 1962
+
Circulisporites parvus de Jersey 1962
G. †Cirrifera Cookson and Eisenack 1960
+
Cirrifera unilateralis Cookson and Eisenack 1960
G. †Clavaticystis Habib and Knapp 1982
+
Clavaticystis furcatus Schrank 2003
Clavaticystis schopfii Habib and Knapp 1982
Clavaticystis sepatus Schrank 2003
G. †Codonia Cookson and Eisenack 1960
G. †Codoniella Cookson and Eisenack 1961
+
Codoniella campanulata Cookson and Eisenack 1960
G. †Comasphaeridium Staplin et al. 1965
+
Comasphaeridium cometes Valensi 1949
G. †Concentricystes Rossignol 1962
+
Concentricystes rubinus Rossignol 1962
G. †Coronopsis Wetzel 1961
+
Coronopsis digitata Wetzel 1961
G. †Cristallinium Vanguestaine 1978
G. †Cyclodictyon Cookson and Eisenack 1958
+
Cyclodictyon paradoxos Cookson and Eisenack 1958
G. Cyclopsiella Drugg and Loeblich 1967
G. †Cymatiosphaera Wetzel 1933
+
Cymatiosphaera coronis Schrank 2003
Cymatiosphaera delicata Cookson and Eisenack 1971
Cymatiosphaera eupeplos Deflandre 1954
Cymatiosphaera imitata Deflandre and Cookson 1955
Cymatiosphaera muralis Schrank 2003
Cymatiosphaera parva Sarjeant 1959
Cymatiosphaera polyornata Schrank 2003
Cymatiosphaera pterota Cookson and Eisenack 1958
Cymatiosphaera punctifera Deflandre and Cookson 1955
Cymatiosphaera radiata Wetzel 1933
Cymatiosphaera rotunda Fensome 1990
Cymatiosphaera stigmata Cookson and Eisenack 1958
Cymatiosphaera triradiata Schrank 2003
Cymatiosphaera wetzelii Deflandre 1954
G. †Cymatiosphaeroides Knoll 1984
+
G. †Dasydiacrodium Timofeev 1959
+
Dasydiacrodium eichwaldi Timofeev 1959
G. †Deunffia Downie 1960
+
Deunffia monospinosa Downie 1960
G. †Dictyosphaeridium Wetzel 1952
+
G. †Dictyotidium Eisenack 1955
+
Dictyotidium dictyotum Eisenack 1938
Dictyotidium fullerene Butterfield et al. 1994
G. †Dimastigobolus Deflandre 1935
+
Dimastigobolus longifilum Deflandre 1935
G. †Diplofusa Cookson and Eisenack 1960
+
Diplofusa gearlensis Cookson and Eisenack 1960
G. †Disphaeria Cookson and Eisenack 1960
+
Disphaeria macropyla Cookson and Eisenack 1960
G. †Domasia Downie 1960
+
Domasia trispinosa Downie 1960
G. †Domasiella Eisenack 1969
G. †Epicephalopyxis Deflandre 1935
+
Epicephalopyxis adhaerens Deflandre 1935
Epicephalopyxis spectabilis Cookson and Eisenack 1958
G. †Estiastra Eisenack 1959
+
Estiastra magna Eisenack 1959
Estiastra minima Volkova 1969
G. †Eupoikilofusa Cramer 1970
G. †Filisphaeridium Staplin et al. 1965
+
G. †Fromea Cookson and Eisenack 1958
+
Fromea acambra Sah et al. 1970
Fromea amphora Cookson and Eisenack 1958
Fromea atlantica Habib 1972
Fromea fragilis Stover and Evitt 1962
Fromea laevigata Stover and Evitt 1978
G. †Gemmuloides Samuelsson and Butterfield 2001
+
Gemmuloides doncookii Samuelsson and Butterfield 2001
G. †Gorgonisphaeridium Staplin et al. 1965
+
Gorgonisphaeridium winslowii Staplin et al. 1965
G. †Granodiscus Mädler 1963
G. †Granomarginata Naumova 1960
+
Granomarginata minuta Maithy 1975
Granomarginata prima Naumova 1961
Granomarginata rotata Maithy and Shukla 1977
G. †Halodinium Bujak 1984
G. †Halophoridia Cookson and Eisenack 1962
+
Halophoridia xena Cookson and Eisenack 1962
G. †Heliosphaeridium Moczydlowska 1991
G. †Kildinella Shepeleva and Timofeev 1963
+
Kildinella giperboreica Shepeleva and Timofeev 1963
Kildinella hyperboreica Timofeev 1966
Kildinella lophostriata Jankauskas 1979
Kildinella minuta Maithy and Shukla 1977
Kildinella sinica Timofeev 1966
Kildinella suketensis Maithy and Shukla 1977
Kildinella timofeevii Maithy 1975
G. †Korilophyton Voronova 1976
G. †Korojonia Cookson and Eisenack 1958
+
Korojonia dubiosa Cookson and Eisenack 1958
G. †Lacunalites Hemer and Nygreen 1967
G. †Leiofusa Eisenack 1938
+
Leiofusa actinomorpha Maithy 1975
Leiofusa fusiformis Eisenack 1938
Leiofusa jurassica Cookson and Eisenack 1958
G. †Leiomarginata Naumova 1961
+
Leiomarginata simplex Naumova 1961
G. †Leiominuscula Naumova 1960
+
Leiominuscula minuta Naumova 1960
G. †Leiopsophosphaera Naumova 1960
+
G. †Leiosphaera Eisenack 1938
+
Leiosphaera solida Eisenack 1938
G. †Leiosphaeridium Eisenack
G. †Limbicysta Marshall 1989
G. †Lophodiacrodium Timofeev 1958
+
Lophodiacrodium obtusum Timofeev 1958
G. †Lophominuscula Naumova 1960
+
Lophominuscula prima Naumova 1960
G. †Lophorytidodiacrodium Timofeev 1958
+
G. †Lophosphaeridium Timofeev 1959
+
Lophosphaeridium rarum Timofeev 1959
G. †Lophozonodiacrodium Timofeev 1959
G. †Lunulidia Eisenack 1958
+
Lunulidia lunula Eisenack 1958
G. †Lusatia Burmann 1970
G. †Margominuscula Naumova 1960
+
Margominuscula rugosa Naumova 1960
G. †Mecsekia Hajos 1966
+
Mecsekia acuta Schrank 2003
Mecsekia curvispina Schrank 2003
Mecsekia triangula Schrank 2003
G. †Megasacculina Naumova 1960
+
Megasacculina atava Naumova 1960
G. †Membranolimbus Maljavkina 1961
+
Membranolimbus triangulatus Maljavkina 1961
G. †Membranosphaera Samoilovitch 1961
+
Membranosphaera maastrichtica Samoilovitch 1961
G. †Micrhystridium Deflandre 1937
+
Micrhystridium bullosum Valensi 1953
Micrhystridium inconspicuum Deflandre 1937
Micrhystridium lanatum Volkova 1969
Micrhystridium setulerum Wang and Luo 1983
Micrhystridium stellatum Deflandre 1945
Micrhystridium tornatum Yin and Li 1978
G. †Microconcentrica Naumova 1960
+
Microconcentrica atava Naumova 1960
G. †Microforaminiferal Stancliffe 1989
+
Microforaminiferal linings Stancliffe 1989
G. †Multifronsphaeridium Zang and Walt 1992
+
Multifronsphaeridium ramosum Moczydłowska and Nagovitsin 2012
G. †Nucellosphaeridium Timofeev 1966
+
Nucellosphaeridium minimum Maithy and Shukla 1977
Nucellosphaeridium zonatum Maithy and Shukla 1977
G. †Nummus Morgan 1975
+
Nummus monoculatus Morgan 1975
G. †Ocalasphaera Prössl 1992
+
Ocalasphaera blindii Prössl 1992
G. †Odontothrix Habib and Knapp 1982
+
Odontothrix multiornatus Schrank 2003
G. †Ooidium Timofeev 1957
+
Ooidium rossicum Timofeev 1957
G. †Operculites Newman 1965
+
Operculites bigranulatus Schrank 2003
Operculites carbonis Newman 1965
G. †Ophiobolus Wetzel 1932
+
Ophiobolus lapidaris Wetzel 1933
G. †Orygmatosphaeridium Timofeev 1959
+
Orygmatosphaeridium plicatum Maithy and Shukla 1977
G. †Palaeobion Wetzel 1961
+
Palaeobion catenatum Wetzel 1961
G. †Palaeocryptidium Deflandre 1955
+
Palaeocryptidium cayeuxi Deflandre 1955
G. †Palaeostomocystis Deflandre 1937
+
Palaeostomocystis cylindrica Cookson and Eisenack 1960
Palaeostomocystis reticulata Deflandre 1935
Palaeostomocystis sinuosa Cookson and Eisenack 1960
G. †Paucilobimorpha de Coninck 1986
G. †Peteinosphaeridium Staplin et al. 1965
+
Peteinosphaeridium bergstromii Staplin et al. 1965
Peteinosphaeridium coronula Yin et al. 1998
G. Piperodinium Scott et al. 1984
G. †Platycystidia Cookson and Eisenack 1960
+
Platycystidia diptera Cookson and Eisenack 1960
G. †Poikilofusa Staplin et al. 1965
+
Poikilofusa spinata Staplin et al. 1965
G. †Polyedrosphaeridium Timofeev 1962
+
G. †Priscotheca Deunff 1961
+
Priscotheca raia Deunff 1961
G. †Protoarchaeosacculina Naumova 1960
+
G. †Protocridosphaeridium Timofeev 1962
+
G. †Protosphaeridium Timofeev 1966
+
Protosphaeridium densum Timofeev 1966
Protosphaeridium volkovae Maithy and Shukla 1977
G. †Prototrematosphaeridium Timofeev 1962
+
G. †Pterocystidiopsis Deflandre 1935
+
G. †Pterospermopsis Wetzel 1952
+
Pterospermopsis aureolata Cookson and Eisenack 1958
Pterospermopsis danica Wetzel 1952
Pterospermopsis eurypteris Cookson and Eisenack 1958
Pterospermopsis pelagica Eisenack 1954
G. †Pterosphaeridia Madler 1963
G. †Quadrina Bujak et al. 1980
G. †Quisquilites Wilson and Urban 1963
+
Quisquilites buckhornensis Wilson and Urban 1963
G. †Recticystis Schrank 2003
+
Recticystis hemispinosus Schrank 2003
G. †Retisphaeridium Staplin et al. 1965
+
Retisphaeridium dichamerum Staplin et al. 1965
G. †Rhombodella Cookson and Eisenack 1962
+
Rhombodella natans Cookson and Eisenack 1962
G. †Schismatosphaeridium Staplin et al. 1965
+
Schismatosphaeridium perforatum Staplin et al. 1965
G. †Schizocystia Cookson and Eisenack 1962
+
Schizocystia laevigata Cookson and Eisenack 1962
Schizocystia rugosa Cookson and Eisenack 1962
G. †Schizofusa Yan 1982
+
G. †Simia Mikhailova and Jankauskas 1989
+
Simia nerjenica Veiss 1989
G. †Simsangia Baksi 1962
+
Simsangia trispinosa Baksi 1962
G. †Singraulipollenites Sinha 1969
+
G. †Solisphaeridium Staplin et al. 1965
+
Solisphaeridium stimuliferum Deflandre 1838
G. †Spicadinium Batten and Lister 1988
+
Spicadinium akidoton Batten and Lister 1988
G. †Staplinium Jansonius 1962
+
Staplinium hexaeder Jansonius 1962
G. †Stictosphaeridium Timofeev 1962
+
Stictosphaeridium implexum Timofeev 1966
Stictosphaeridium podolense Timofeev 1962
G. †Stylodiniopsis Eisenack 1954
+
Stylodiniopsis maculatum Eisenack 1954
G. †Symplassosphaeridium Timofeev 1969
+
Symplassosphaeridium bulbosum Maithy and Shukla 1977
G. †Synsphaeridium Eisenack 1965
G. †Tanarium Kolosova 1991
+
Tanarium anozos Willman 2008
Tanarium conoideum Kolosova 1991
Tanarium digitiformum Nagovitsin and Faizullin 2004
Tanarium irregulare Moczydlowska et al. 1993
Tanarium muntense Grey 2005
Tanarium tuberosum Moczydlowska et al. 1993
G. †Tetrabrachiophora Eisenack 1954
+
Tetrabrachiophora natans Eisenack 1954
G. †Trachydiacrodium Timofeev 1959
+
Trachydiacrodium productum Timofeev 1959
G. †Trachyhystrichosphaera Timofeev et al. 1976
+
G. †Trachysphaeridium Timofeev 1966
+
Trachysphaeridium levis Lopukhin 1971
G. †Trematosphaeridium Timofeev 1959
+
G. †Triangulopsis Döring 1961
+
Triangulopsis discoidalis Döring 1961
Triangulopsis plicatus Singh and Kumar 1969
Triangulopsis varians Singh and Kumar 1969
G. †Trigonopyxidia Cookson and Eisenack 1961
+
Trigonopyxidia ginella Downie and Sarjeant 1965
G. †Trigonopyxis Cookson and Eisenack 1960
G. †Variomargosphaeridium Zang and Walter 1992
+
Variomargosphaeridium gracile Xiao et al. 2014
G. †Vavososphaeridium Timofeev 1959
+
Vavososphaeridium bharadwajii Salujha et al. 1971
Vavosphaeridium densum Maithy 1975
G. †Veryhachium Deunff 1954
+
Veryhachium brevispinum Horowitz 1974
Veryhachium downiei Stockmans and Williere 1962
Veryhachium patulum Wicander 1974
Veryhachium reductum Deunff 1958
Veryhachium singulare Burger 1980
Veryhachium trisulcum Deunff 1954
G. †Wilsonastrum Jansonius 1962
+
Wilsonastrum colonicum Jansonius 1962
G. †Zonooidium Timofeev 1957
G. †Zonosphaeridium Timofeev 1959
+
Zonosphaeridium densum Maithy 1975
Zonosphaeridium punctatum Maithy and Shukla 1977
Invalid names: Archaeohystrichosphaeridium Timofeev 1959 [nomen nudum], Asperatopsophosphaera Shepeleva and Timofeev 1963 [nomen nudum], Dasyrytidodiacrodium Timofeev 1959 [nomen nudum], Microrugosina Naumova 1960 [nomen nudum]
Diagnosis
No diagnoses are available