Cyclopyxis bacillifera Chardez, 1966
Cyclopyxis crucistoma Bartoš, 1963
Cyclopyxis eurystoma Deflandre, 1929
Alocodera cockayni Penard, 1910
Amphizonella Greeff, 1866
Amphizonella violacea Greeff, 1866
Apodera vas Certes, 1889
Arcella apicata Schaudinn, 189
Arcella arenaria Greeff, 1866
Arcella artocrea Leidy, 1879
Arcella bathystoma Deflandre, 1928
Arcella brasiliensis da Cunha, 1913
Arcella catinus Penard, 1890
Arcella conica (Playfair, 1918) Deflandre, 1928
Arcella costata Ehrenberg, 1847
Arcella discoides Ehrenberg, 1843
Arcella elliptica Kufferath, 1932
Arcella excavata Cunningham, 1919
Arcella gibbosa Penard, 1890
Arcella grospietchi Štĕpánek, 1963
Arcella hemisphaerica Perty, 1852
Arcella infraterricola Chardez, 1971
Arcella irregularis Motti, 1961
Arcella jeanneli Virieux, 1913
Arcella jurassica Olivier, 1945
Arcella leidyana Deflandre, 1928
Arcella lichenophila Decloitre, 1976
Arcella lobostoma Deflandre, 1928
Arcella maggii Chardez, 1964
Arcella marginata Daday, 1905
Arcella megastoma Penard, 1902
Arcella mitrata Leidy, 1879
Arcella multilobata Golemansky, 1964
Arcella muscicola Decloitre, 1976
Arcella nordestina Vucetich, 1973
Arcella ovaliformis Chardez et Beyens, 1987
Arcella oyei Štĕpánek, 1963
Arcella papyracea Playfair, 1914
Arcella pentastoma Štĕpánek, 1953
Arcella polypora Penard, 1890
Arcella pseudojurassica Decloitre
Arcella rotundata Playfair, 1918
Arcella vulgaris Ehrenberg, 1830
Argynnia gertrudeana Jung, 1942
Argynnia retorta (Leidy, 1879) Štĕpánek, 1953
Argynnia spicata Wailes, 1913
Argynnia teres Jung, 1942
Argynnia triangulala (Lang, 1865) Cash, 1909
Argynnia tylophora Jung, 1942
Argynnia vitraea Penard, 1899
Argynnia bipes (Carter, 1870) Murray, 1870
Argynnia caudata Leidy, 1879
Argynnia columbiana Wailes, 1925
Argynnia dentistoma Penard, 1890
Argynnia ertli Laminger, 1973
Argynnia schwabei Jung, 1942
Bullinularia indica (Penard, 1911) Deflandre, 1953 (Bullinula indica Penard, 1911)
Bullinularia minor (Hoogenraad et de Groot, 1948) Deflandre, 1953 (Bullinula minor Hoogenraad et de Groot, 1948)
Centropyxis laevigata Penard, 1890
Centropyxis latior Bartoš, 1963
Centropyxis marsupiformis (Wallich, 1864) Deflandre, 1929 (Difflugia marsupiformis Wallich, 1864)
Centropyxis minuta Deflandre, 1929
Centropyxis notonyx Jung, 1942
Centropyxis percolabiensis Dekhtyar, 1994
Centropyxis platystoma (Penard, 1890) Deflandre, 1929 (Difflugia platystoma Penard, 1890)
Centropyxis pyriformis van Oye, 1958
Centropyxis recurvata Vucetich, 1976
Centropyxis sacciformis Hoogenraad et de Groot, 1940
Centropyxis spinosa (Cash, 1909) Deflandre, 1929 (C. aculeata spinosa Cash, 1909)
Centropyxis sylvatica (Deflandre, 1929) Bonnet et Thomas, 1955 (C. aerophila sylvatica Deflandre, 1929)
Centropyxis aculeata (Ehrenberg, 1838) Stein, 1857
Centropyxis adami Laminger, 1971
Centropyxis aerophila Deflandre, 1929
Centropyxis aurita Laminger, 1972
Centropyxis austriaca Laminger, 1971
Centropyxis cassis (Wallich, 1864) Deflandre, 1929 (Difflugia cassis Wallich, 1864)
Centropyxis chardezi Štĕpánek, 1963
Centropyxis chardeziella Laminger, 1973
Centropyxis compressa van Oye, 1948
Centropyxis constricta (Ehrenberg, 1841) Deflandre, 1929 (Difflugia constricta Ehrenberg, 1838)
Centropyxis cordobensis Vucetich, 1976
Centropyxis declivistoma Chardez, 1990
Centropyxis decloitrella Laminger, 1973
Centropyxis decloitri Štĕpánek, 1963
Centropyxis deflandrei Rampi, 1950
Centropyxis discoides (Penard, 1890) Deflandre, 1929 (C. aculeata discoides Penard, 1890)
Centropyxis ecornis (Ehrenberg, 1841) Leidy, 1879 (Arcella ecornis Ehrenberg, 1841)
Centropyxis elongata (Penard, 1890) Thomas, 1959
Centropyxis gasparella Chardez, Beyens et de Bock, 1988
Centropyxis gibba Deflandre, 1929
Centropyxis grelli Laminger, 1973
Centropyxis hemisphaerica (Barnard, 1875) Deflandre, 1929 (C. aculeata hemisphaerica Barnard, 1857)
Centropyxis hirsuta Deflandre, 1929
Centropyxis horrida Penard, 1911
Centropyxis invaginata Schönborn, 1966
Centropyxis janetscheki Laminger, 1971
Centropyxis kurakchayensis Snegovaya et Alekperov, 2005
Centropyxis loffleri Laminger, 1972
Centropyxis mirabilis Bartoš, 1940
Centropyxis orbicularis Deflandre, 1929
Centropyxis villiersi Decloitre, 1954
Certesella certesi Penard, 1911
Certesella martiali Certes, 1889
Certesella murrayi Wailes, 1913
Cornutheca ansata Leidy, 1879
Cornutheca equicalceus Leidy, 1879
Cotnutheca saccifera Wailes, 1913
Cryptodifflugia angulata Playfair, 1917
Cryptodifflugia angusta (Schönborn, 1965) Page, 1966 (Difflugiella angusta Schönborn, 1965)
Cryptodifflugia angustatostoma Beyens et Chardez, 1982
Cryptodifflugia apiculata (Cash, 1904) Page, 1966 (Difflugiella apiculata Cash, 1904)
Cryptodifflugia bassini Bobrov, 2001
Cryptodifflugia compressa Penard, 1902
Cryptodifflugia crenulata Playfair, 1917
Cryptodifflugia horrida (Schönborn, 1965) Page, 1966 (Difflugiella horrida Schönborn, 1965)
Cryptodifflugia minuta Playfair, 1917
Cryptodifflugia oviformis Penard, 1890
Cryptodifflugia psammophila Golemansky, 1970 (Difflugiella psammophila Golemansky, 1970)
Cryptodifflugia pusilla Playfair, 1917
Cryptodifflugia sacculus Penard, 1902
Cryptodifflugia splendida (Schönborn, 1965) Page, 1966 (Difflugiella splendida Schönborn, 1965)
Cryptodifflugia voigti Schmidt, 1926
Cryptodifflugia vulgaris (Francé, 1913) Volz, 1928 (Difflugiella vulgaris Francé, 1913)
Cucurbitella crateriformis Gauthier-Lièvre et Thomas, 1960
Cucurbitella dentata Gauthier-Lièvre et Thomas, 1960
Cucurbitella lunaris Gauthier-Lièvre et Thomas, 1960
Cucurbitella madagascariensis Gauthier-Lièvre et Thomas, 1960
Cucurbitella megastoma Gauthier-Lièvre et Thomas, 1960
Cucurbitella mespiliformis Penard, 1902
Cucurbitella modesta Gauthier-Lièvre et Thomas, 1960
Cucurbitella obturata Gauthier-Lièvre et Thomas, 1960
Cucurbitella vlasinensis Ogden et Zivković, 1983
Cyclopyxis penardi (Penard, 1911) Deflandre, 1929 (Centropyxis arcelloides Penard, 1911)
Cyclopyxis stellata (Wailes, 1927) Deflandre, 1929 (Centropyxis stellata Wailes, 1927)
Cyclopyxis tronconica Godeanu, 1972
Cyclopyxis amplecta Schönborn, 1966
Cyclopyxis aplanata (Penard, 1911) Deflandre, 1929 (Centropyxis arcelloides Penard, 1911)
Cyclopyxis arcelloides (Penard, 1902) Deflandre, 1929 (Centropyxis arcelloides Penard, 1902)
Cyclopyxis grospietschi Schönborn, 1962
Cyclopyxis kahli Deflandre, 1929 (C. kahli cyclostoma Bonnet et Thomas, 1959; C. kahli oblique Decloitre, 1969; C. dispar Decloitre, 1965; C. duclis Couteaux et Munsch, 1978; C. eurystoma stenostoma Decloitre, 1953; C. insolitus Decloitre, 1969; C. profundistoma Bartoš, 1963)
Cyclopyxis plana Bartoš, 1963
Cyclopyxis puteus Thomas, 1960
Difflugia bicruris Gauthier-Lièvre et Thomas, 1958
Difflugia bifurcata Snegovaya et Alekperov, 2005
Difflugia bipartis Godeanu, 1972
Difflugia bistrica Ogden, Živković, 1983
Difflugia brevicolla Cash et Hopkinson, 1909
Difflugia brychtai Štĕpánek, 1967
Difflugia bryophila (Penard, 1902) Jung, 1942
Difflugia capreolata Penard, 1902
Difflugia claviformis Penard, 1899
Difflugia compressa (Leidy, 1879) Gauthier-Lièvre et Thomas, 1958
Difflugia congolensis Gauthier-Lièvre et Thomas, 1958
Difflugia corniculata Gauthier-Lièvre et Thomas, 1958
Difflugia curvicaulis Penard, 1899
Difflugia cylindrus (Thomas, 1953) Ogden, 1983
Difflugia decloitrei Godeanu, 1972
Difflugia difficilis Thomas, 1954
Difflugia dragana Ogden, Živković, 1983
Difflugia dujardini Chardez, 1957
Difflugia echinulata Penard, 1911
Difflugia elegans Penard, 1890
Difflugia finstertaliensis Laminger, 1971
Difflugia foissneri Chardez, 1987
Difflugia gassowskii (Gassowsky, 1936) Ogden, 1983
Difflugia geosphaerica Ogden, 1991
Difflugia gigantea (Chardez, 1967) Ogden et Fairman, 1979
Difflugia glans Penard, 1902
Difflugia globularis Wallich, 1864
Difflugia globulosa Dujardin, 1837
Difflugia gramen Penard, 1902
Difflugia guttula Godeanu, 1972
Difflugia hanaki Štĕpánek, 1967
Difflugia heali Laminger, 1973
Difflugia heterodentata Dekhtyar, 1993
Difflugia hiraethogii Ogden, 1983
Difflugia histrio Penard, 1908
Difflugia hoogenraadii Štĕpánek, 1957
Difflugia humilis Chardez, 1991
Difflugia immanata (Jung, 1942) Štĕpánek, 1954
Difflugia ivorensis Gauthier-Lièvre et Thomas, 1958
Difflugia juzephiniensis Dekhtyar, 1993
Difflugia kabylica Gauthier-Lièvre et Thomas, 1958
Difflugia kempnyi Štĕpánek, 1953
Difflugia labiosa Wailes, 1919
Difflugia lacustris (Penard, 1899) Ogden, 1983
Difflugia lanceolata Penard, 1890
Difflugia lata Jung, 1942
Difflugia lebes Penard, 1893
Difflugia leidyi Wailes, 1912
Difflugia lemani Blanc, 1892
Difflugia levanderi Playfair, 1918
Difflugia limnetica (Levander, 1900) Penard, 1902
Difflugia linearis (Penard, 1890) Gauthier-Lièvre et Thomas, 1958
Difflugia lingula Penard, 1911
Difflugia lismorensis Playfair, 1918
Difflugia lithophila (Penard, 1902) Gauthier-Lièvre et Thomas, 1958
Difflugia lobostoma Leidy, 1879
Difflugia lucida Penard, 1890
Difflugia mamma Gassowsky, 1936
Difflugia mammella Laminger, 1971
Difflugia manicata Penard, 1902
Difflugia masaruzii van Oye, 1958
Difflugia maxilabiosa Chardez, 1985
Difflugia mica Frenzel, 1892
Difflugia microclaviformis (Kourova, 1925) Ogden, 1983
Difflugia microstoma (Thomas, 1954) Ogden, 1983
Difflugia molesta Penard, 1902
Difflugia mulanensis Yang, Meisterfeld, Zhang et Shen, 2005
Difflugia muriculata Gauthier-Lièvre et Thomas, 1958
Difflugia nodosa (Leidy, 1879) Ogden, Živković, 1983
Difflugia oblonga Ehrenberg, 1838
Difflugia ogdeni Snegovaya et Alekperov, 2005
Difflugia oranensis (Gauthier-Lièvre et Thomas, 1958) Ogden, 1984
Difflugia ovalisina Beyens et Chardez, 1957
Difflugia paranodosa Dekhtyar, 1993
Difflugia parva (Thomas, 1954) Ogden, 1983
Difflugia paulii Ogden, 1983
Difflugia penardi Hopkinson, 1909
Difflugia perfilievi Gassowsky, 1936
Difflugia petricola Cash, 1909
Difflugia platidens Gassowsky, 1936
Difflugia pristis Penard, 1902
Difflugia pulex Penard, 1902
Difflugia rectifrons Gauthier-Lièvre et Thomas, 1958
Difflugia richmondiae Playfair, 1914
Difflugia rotiferoformis Snegovaya et Alekperov, 2005
Difflugia rubescens Penard, 1891
Difflugia sandbergi Schönborn, 1966
Difflugia sarissa Li Sun Tai, 1931
Difflugia scalpellum Penard, 1899
Difflugia schurmanni van Oye, 1932
Difflugia septentrionalis Awerintzew, 1906
Difflugia serbica Ogden et Živković, 1983
Difflugia serrata Ogden et Živković, 1983
Difflugia sinuata Gauthier-Lièvre et Thomas, 1958
Difflugia sladeceki Štĕpánek, 1967
Difflugia smilion Thomas, 1953
Difflugia solowetzkii Mereschkowsky, 1879
Difflugia soudanensis Gauthier-Lièvre et Thomas, 1958
Difflugia sphincta Jung, 1942
Difflugia stechlinensis Schönborn, 1962
Difflugia stoutii Ogden, 1983
Difflugia styla Ogden et Živković, 1983
Difflugia sudiformis Schönborn, 1966
Difflugia szczepanskii Schönborn, 1965
Difflugia tenuis (Penard, 1890) Ogden, 1983
Difflugia tracta Schönborn, 1966
Difflugia tricornis (Jung, 1936) Ogden, 1983
Difflugia tripodipyxis Laminger, 1972
Difflugia urceolata Carter, 1864
Difflugia ventricosa Deflandre, 1926
Difflugia venusta (Penard, 1902) Ogden, 1983
Difflugia vermiformis Snegovaya et Alekperov, 2005
Difflugia viscidula Penard, 1902
Difflugia achlora (Penard, 1902) Ogden, 1980
Difflugia acuminata Ehrenberg, 1838
Difflugia acutissima Deflandre, 1931
Difflugia acutissimella Chardez, 1985
Difflugia amphoralis Cash, Hopkinson, 1909
Difflugia ampla Rampi, 1950
Difflugia ampullula Playfair, 1918
Difflugia angulostoma Gauthier-Lièvre et Thomas, 1958
Difflugia armatostoma Snegovaya et Alekperov, 2005
Difflugia avellana Penard, 1890
Difflugia azerbaijanica Snegovaya et Alekperov, 2005
Difflugia bacillariarum Perty, 1849
Difflugia bacillifera Penard, 1890
Difflugia baculosa Schönborn, 1966
Difflugia bartosi Štĕpánek, 1952
Difflugia beyensi Chardez, 1985
Difflugia biconcava Ertl, 1964
Difflugia bicornis Penard, 1890
Difflugia bidens Penard, 1902
Difflugia corona Wallich, 1864
Difflugia distenda (Penard, 1899) Ogden, 1983
Difflugia exigua Schönborn, 1966
Difflugia gigantea acuminata Chardez et Gaspar, 1984
Difflugia longum Chardez, 1987
Difflugia mammillaris Penard, 1893
Difflugia minuta Rampi, 1950
Difflugia papillomata Gauthier-Lièvre et Thomas, 1958
Difflugia pecac Ogden, 1984
Difflugia pyriformis Perty, 1849
Difflugia romanovskyi Štĕpánek, 1967
Difflugia rotunda (Chardez, 1956) Ogden, 1983
Gibbocarina galeata Penard, 1890
Gibbocarina gracilis Penard, 1910
Healosphenia elegans Leidy, 1879
Healosphenia papilio Leidy, 1879
Heleopera lata Cash, 1909
Heleopera petricola Leidy, 1879
Heleopera rosea Penard, 1890
Heleopera sphagni Leidy, 1874 (H. picta Leidy, 1879)
Heleopera sylvatica Penard, 1890
Hemimastix amphikineta Foissner et al., 1988
Hexamita inflata Dujardin, 1838
Hoogenraadia humicola Bonnet, 1974
Hoogenraadia ovata Bonnet, 1974
Hyalosphenia angulata Schouteden, 1905
Hyalosphenia cuneata Stein, 1857 (H. lata Schultze, 1875; Hyalosphenia ligata Tatem, 1870)
Hyalosphenia gigantea de Graaf, 1952
Hyalosphenia inconspicua West, 1903
Hyalosphenia insecta Harnisch, 1938
Hyalosphenia jirovici Štĕpánek, 1953
Hyalosphenia minuta Cash, 1891
Hyalosphenia mraconia Godeanu, 1972
Hyalosphenia ovalis Wailes, 1912
Hyalosphenia penardi Lauterborn, 1908
Hyalosphenia platystoma West, 1903
Hyalosphenia punctata Penard, 1891
Hyalosphenia schoutedeni Van Oye, 1926
Hyalosphenia subflava Cash, 1909
Hyperamoeba flagellata Alexeieff, 1923
Lesquereusia combinata (Štĕpánek, 1952) Bartoš, 1954 (L. spiralis combinata Štĕpánek, 1952)
Lesquereusia epistomium Penard, 1893 (L. jurassica epistomium Penard, 1893)
Lesquereusia inequalis Cash et Hopkinson, 1909
Lesquereusia longicollis Dekhtyar, 1994
Lesquereusia modesta Rhumbler, 1895
Lesquereusia spiralis (Ehrenberg, 1840) Bütschli, 1888 (Difflugia spiralis Ehrenberg, 1840; L. jurassica Schlumberger, 1845)
Longinebela spesiosa Deflandre, 1936
Longinebela tubulosa Penard, 1902
Meisterfeldia chibisovi Bobrov 2016
Meisterfeldia polygonia Bobrov 2016
Meisterfeldia wegeneri Bobrov 2016
Microchlamys Cockerell, 1911
Microchlamys patella (Claparéde et Lachmann, 1859) Cockerell, 1911
Mrabella plicata Hoogenrad et de Groot, 1940
Mrabella subcarinata Gautier-Lièvre, 1957
Multicilia marina Cienkowsky, 1881
Nebela militaris Penard, 1890
Nebela penardiana Deflandre, 1936
Nebela pulcherrima Awerintzew, 1907
Nebela tincta (Leidy, 1879) Awerintzew, 1906 (Hyalosphenia tincta Leidy, 1879)
Netzelia compressa Dekhtyar, 1994
Netzelia oviformis (Cash, 1909) Ogden, 1979 (Difflugia oviformis Cash, 1909)
Netzelia tuberculata (Wallich, 1864) Netzel, 1983 (Difflugia tuberculata Wallich, 1864)
Netzelia wailesi (Ogden, 1980) Meisterfeld, 1984 (Difflugia wailesi Ogden, 1980; Difflugia tuberculata minor Wailes, 1919)
Oopyxis cophostoma Jung, 1942
Oopyxis cyclostoma Thomas, 1958
Oopyxis danubialis Godeanu, 1972
Oopyxis islandica (Decloitre, 1966) Godeanu, 1972 (Difflugia bacillifera islandica Decloitre, 1966)
Padaungiela wailesi Deflandre, 1936
Padaungiella lageniformis Penard, 1902
Padaungiella tubulata Brown, 1911
Padaungiella wetekampi Jung, 1942
Paraqudrula discoides (Penard, 1893) Deflandre, 1932
Paraqudrula globulosa (Penard, 1891) Deflandre, 1932
Paraqudrula irregularis (Archer, 1877) Deflandre, 1932
Paraqudrula penardi Deflandre, 1953
Paraqudrula rotunda Schönborn, 1966
Paraqudrula ogdeni Beyens et Chardez, 1997
Phalansterium solitarium Sandon, 1924
Phryganella acropodia (Hertwig et Lesser, 1874) Hopkinson, 1909
Phryganella microps Valkanov, 1963
Phryganella nidulus Penard, 1902
Phryganella paradoxa Penard, 1902
Physochilla corniculata Jung, 1942
Physochilla cratera Wailes, 1912
Physochilla gauthier-lievri Štĕpánek, 1963
Physochilla griseola Penard, 1911
Physochilla tenella Penard, 1893
Plagiopyxis callida Penard, 1910
Plagiopyxis declivis Thomas, 1958
Plagiopyxis labiata Penard, 1910
Plagiopyxis penardi Thomas, 1958
Planocarina carinata (Archer, 1867) Leidy, 1879
Planocarina marginata Penard, 1902
Planocarina maxima Awerintzew, 1907
Pontigulasia breviottis Snegovaya et Alekperov, 2005
Pontigulasia compressoidea Jung, 1942
Pontigulasia elisa Penard, 1893
Pontigulasia incisa Rhumbler, 1896 (Difflugia elisa Penard, 1888)
Pontigulasia rhumbleri Hopkinson, 1919
Pontigulasia sarrazinensis Chardez et Gaspar, 1984
Pontigulasia spiralis Rhumbler, 1896
Porosia bigibossa Penard, 1890
Porosia paracarinata Bobrov, Kosakyan, 2015
Pyxidicula cymbalum Penard, 1902
Pyxidicula gibbosa Schönborn, 1966
Pyxidicula operculata (Agardh, 1827) Ehrenberg, 1834
Pyxidicula ornata Bartoš, 1954
Pyxidicula patens (Claparéde et Lachmann, 1858) Bartoš, 1954 (Arcella patens Claparéde et Lachmann, 1858)
Quadrulella acuminata van Oye, 1958
Quadrulella alata Gautier-Lièvre, 1957
Quadrulella camerounensis Gautier-Lièvre, 1957
Quadrulella debonti Gautier-Lièvre, 1957
Quadrulella elegans Gautier-Lièvre, 1953
Quadrulella elongata van Oye, 1956
Quadrulella lageniformis van Oye, 1949
Quadrulella quadrigera Deflandre, 1936
Quadrulella scutellata Wailes, 1912
Quadrulella symmetrica (Wallich, 1863) Schulze, 1875
Quadrulella tropica Wailes, 1912
Quadrulella tubulata Gautier-Lièvre, 1953
Schwabia globulosa Schönborn, 1966
Schwabia regularis Jung, 1942
Schwabia sphaerica Snegovaya et Alekperov, 2005
Trigonopyxis arcula (Leidy, 1879) Penard, 1912 (Difflugia arcula Leidy, 1879)
Trigonopyxis microstoma Hoogenraad et de Groot, 1948
Trigonopyxis minuta Schönborn et Peschke, 1988
Wailesella eboracensis Deflandre, 1928
Zivkovicia compressa (Carter, 1864) Ogden, 1987
Zivkovicia flexa (Cash et Hopkinson, 1909) Ogden, 1987
Zivkovicia spectabilis (Penard, 1902) Ogden, 1987