Species (22.489)
- Priscofolliculina pulchra Deflandre & Deunff 1957
- Proboscidium armatum Meunier 1910
- Proboscella verminus sensu Kent 1881
- Proboveria thyasirae Fenchel 1965
- Proboveria loripedis Chatton & Lwoff 1936
- Proboveria triangularis Fenchel 1965
- Proclausilocola complanata Lom 1959
- Proluxophrya vorticelloides Fraipoint ()
- Pronyctotherus dragescoi Albaret & Njiné 1976
- Prolicnophora setifera Maskell ()
- Prooxytricha pilosus ()
- Proplectella acuta Jörgensen 1924
- Proplectella angustior Jörgensen 1924
- Proplectella amphora Kofoid & Campbell 1929
- Proplectella biorbiculata Hada 1938
- Proplectella biangularia Kofoid & Campbell 1929
- Proplectella columbiana Wailes 1925
- Proplectella cuspidata Kofoid & Campbell 1929
- Proplectella ellipsoida Kofoid & Campbell 1929
- Proplectella fastigata Jörgensen 1924
- 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
- Prorodon leoncoranicus Agamaliev 1978
- Prorodon limnetis Stokes 1886
- Prorodon lieberkühni Bütschli 1889
- Prorodon luteus Kahl 1930
- Prorodon marinus Claparède & Lachmann 1859
- Prorodon margaritifer Claparède & Lachmann 1859
- Prorodon minutus Kahl 1927
- Prorodon mimeticus Kahl 1930
- Prorodon moebiusi Kahl 1930
- Prorodon morgani Kahl 1930
- Prorodon morula Gajevskaja 1928
- Prorodon multinucleatus Dragesco 1954
- Prorodon mutans Mermond 1914
- Prorodon naviculus Tucolesco 1962
- Prorodon niveus Ehrenberg 1834
- Prorodon nucleatus Svec 1897
- Prorodon nucleolatus Kahl 1930
- Prorodon opalescens Kahl 1928
- Platycola baicalica Swarczewsky 1930
- Platycola bicolor
- Platycola decumbens Ehrenberg 1830
- Platycola coelochila Stokes 1887
- Platycola donsi Kahl 1933
- Platycola bütschlii Nüsslin 1884
- Platycola gracilis Fromentel 1874
- Platycola hydrobiae Hofker 1930
- Platycola longicollis Kent 1882
- Platycola mollis Fromentel 1874
- Platycola nigra Wailes 1928
- Platycola reflexa Mermod ?
- Platycola pala Swarczewsky 1930
- Platycola steineri Penard 1914
- Platycola regularis Fromentel 1874
- Platycola truncata Fromentel 1874
- Platycola tincta Fromentel 1874
- Platycola striata Fromentel 1874
- Platyfolliculina paguri Andrews & Reinhard 1943
- Platyfolliculina sahrhageana Hadzi 1938
- Platynema hyalinum Kahl 1931
- Platynema latifrons Gourret & Roeser 1886
- Platynema mirum Penard 1922
- Platynema sociale Penard 1922
- Platynematum denticulatum Kahl 1933
- Platynema solivagum Kahl 1926
- Platynematum hyalinum Kahl 1931
- Platynematum latifrons Gourret & Roeser 1888
- Platynematum marinum Kahl 1933
- Platynematum sociale Penard 1922
- Platynematum solivagum Kahl 1926
- Platynematum mirum Penard 1922
- Platyophrya angusta Kahl 1926
- Platyophrya chlorelligera Kawakami 1989
- Platyophrya procera Foissner 1980
- Platyophrya spumacola Kahl 1927
- Platyophrya viridis sensu Groliere 1977
- Platyophrya vorax Kahl 1926
- Protanoplophrya stomata Miyashita 1929
- Protocaviella acuminata Cunha 1915
- Protocrucia pigerrima Cohn 1866
- Protocruzia contrax Mansfeld 1923
- Protocruzia adhaerens Mansfeld 1923
- Protocruzia chesapeakensis Small & Lynn 1985
- Protocruzia depressa Ammermann 1968
- Protocrucia granulosa Kahl 1933
- Protocruzia pigerrima Cohn 1866
- Protocyclidium terrenum Alekperov 1993
- Pseudocohnilembus veisovi Alekperov & Musaev 1988
- Pseudocohnilembus persalinus Evans & Thompson 1964
- Pseudocohnilembus putrinus Kahl 1928
- Pseudocristigera hymenofera Horvat 1956
- Pseudocolpoda cochlearis Ilowaisky 1921
- Pseudocyclidium marylandi Small & Lynn 1985
- Pseudocyrtolophosis alpestris Foissner 1980