Species (311)
- Placus lividia Wang & Nie 1932
- Placus marina Kahl 1927
- Placus luciae Kahl 1926
- Placus ovum Kahl 1926
- Placus salinus Dietz 1964
- Placus socialis Fabre-Domergue 1889
- Placus sulcatus Mansfeld 1923
- Placus viridis Kahl 1927
- Plagiocampa acuminata Kahl 1933
- Plagiocampa atra Grandori & Grandori 1934
- Plagiocampa caudata Alekperov 1993
- Plagiocampa chaetophorae Kahl 1930
- Plagiocampa difficilis Foissner 1981
- Pelagothrix chlorelligera Foissner, Berger & Schaumburg 1999
- Pelagothrix plancticola Foissner, Berger & Schaumburg 1999
- Placus antarcticus Petz, Song & Wilbert 1995
- Plagiocampa longis Kahl 1927
- Plagiocampa incisa Kahl 1933
- Paraurotricha discolor Kahl 1930
- Plagiocampa fixa ssp. salsa
- Plagiocampa fixa ssp. dulcis
- Amphibothrella enigmatica Grandori & Grandori 1934
- Holophrya africana Dragesco 1965
- Holophrya alba Fromentel 1876
- Holophrya alveolata Kahl 1927
- Holophrya amphora Kahl 1926
- Holophrya annandalei Ghosh 1919
- Holophrya atra Svec 1897
- Holophrya barbatula Penard 1922
- Holophrya becciformis Dumas 1930
- Holophrya bengalensis Ghosh 1919
- Holophrya biconica Sauerbrey 1928
- Holophrya bimacronucleata Grandori & Grandori 1934
- Holophrya binucleata Lepsi 1926
- Holophrya caspica Agamaliev 1966
- Holophrya bütschlii Bürger 1906
- Holophrya coleps Ehrenberg 1831
- Holophrya caudata Dumas 1929
- Holophrya collaris Kahl 1926
- Holophrya cucurbita Dumas 1937
- Holophrya coronata Morgan 1925
- Holophrya curvilata Smith 1897
- Holophrya discolor Ehrenberg 1833
- Holophrya gargamella Faure-Fremiet 1924
- Holophrya gracilis Penard 1922
- Holophrya haplostoma André 1916
- Holophrya hexatricha Savi 1913
- Holophrya heterostoma Beardsley 1901
- Holophrya indica Bathia 1916
- Holophrya labiata Dumas 1937
- Holophrya lateralis Kent 1881
- Holophrya lagena Fromentel 1876
- Holophrya lieberkühni Bütschli 1889
- Holophrya latericollaris Wang 1930
- Holophrya limbata Dumas 1929
- Holophrya mamillata Kahl 1927
- Holophrya nigricans Lauterborn 1894
- Holophrya pelagica Lohmann 1920
- Holophrya pogonias Smith 1897
- Holophrya pharyngeata Kahl 1935
- Holophrya setigera Dumas 1930
- Holophrya saginata Penard 1922
- Holophrya sulcata Penard 1922
- Holophrya simplex Schewiakoff 1893
- Holophrya tarda Quennerstedt 1869
- Holophrya torquabilis Lepsi 1962
- Holophrya teres Ehrenberg 1833
- Holophrya truncata Kahl 1927
- Holophrya vorax Dragesco 1960
- Holophrya vesiculosa Kahl 1926
- Holophrya acuta Dumas 1929
- Holophrya gibbera Fromentel 1876
- Holophrya emmae Bergh 1896
- Holophrya globosa Fromentel 1876
- Holophrya marina Mansfeld 1923
- Holophrya maxima Daday 1886
- Holophrya oblonga Maupas 1883
- Holophrya ornata Stokes 1887
- Holophrya ovata Fromentel 1876
- Holophrya ovum Ehrenberg 1831
- Holophrya perlucida Gajevskaja 1927
- Prorodon taenicatus Blochmann 1895
- Prorodon trichocystis Dragesco 1954
- Prorodon utahensis Pack 1919
- Prorodon teres Ehrenberg 1833
- Prorodon vacuolatus Dragesco 1960
- Prorodon vesiculosus Kahl 1926
- Prorodon valkanovi Lepsi 1959
- Prorodon vorax Perty 1852
- Prorodon viridis Kahl 1927
- Pseudobalanion planctonicum Foissner, Oleksiv & Müller 1990
- Pleuroplitoides smithi Foissner 1996
- Pleuroplites australis Foissner 1988
- Prorodon elegans Kahl 1928
- Prorodon espejoci Bürger 1908
- Prorodon emmae Bergh 1896
- Prorodon griseus Claparède & Lachmann 1859
- Prorodon exilis Dumas 1937
- Prorodon karianus Meunier 1907
- Prorodon lemani Dragesco 1966