Species (22.489)
- Kerona cuneata Dumas 1930
- Kerona cylindrica Dumas 1929
- Kerona curvata Dumas 1929
- Kerona epalxiformis Dumas 1937
- Kerona diademata Dumas 1929
- Kerona extuberans Dumas 1930
- Kerona lacerta Fromentel 1876
- Kerona lepus Müller 1786
- Kerona longata Fromentel 1876
- Kerona mamillata Dumas 1929
- Kerona ovata Dumas 1929
- Kerona ondulata Dumas 1930
- Kerona pediculus Müller 1773
- Kerona polyporum Ehrenberg 1835
- Kerona pustulata Müller 1786
- Kerona subrotondata Dumas 1930
- Kerona rotunda Fromentel 1876
- Kerona triangularis Fromentel 1876
- Ploesconia cithara Dujardin 1842
- Ploesconia mamillata Fromentel 1876
- Ploesconia monostylus Dumas 1929
- Ploesconia ovalis Fromentel 1876
- Podophrya brachypoda Stokes 1885
- Ploesconia torquescens Dumas 1937
- Podophrya astaci Claparède & Lachmann 1859
- Podophrya carchesii Claparède & Lachmann 1859
- Podocyathus diadema Kent 1882
- Podophrya elongata Claparède & Lachmann 1859
- Podophrya fixa Müller 1786
- Podophrya cyclopum Claparède & Lachmann 1859
- Podophrya grelli Dieckmann 1985
- Podophrya halophila Kahl 1934
- Podophrya libera Perty 1852
- Podophrya lichtensteinii Claparède & Lachmann 1859
- Podophrya macrostyla Stokes 1885
- Podophrya maupasii Bütschli 1889
- Podophrya pusilla Stokes 1890
- Polyplastron alaskum -> LB0002: 58
- Polyplastron articum -> LB0002: 58
- Polyplastron fenestratum -> LB0002: 58
- Polyplastron monoscutum -> LB0002: 58
- Polyplastron californiense -> LB0002: 58
- Polyplastron multivesiculatum -> LB0002: 58 1925
- Polyspira delagei Minkiewicz 1912
- Ponturostyla enigmatica Dragesco & Dragesco-Kernéis 1986
- Poroecus annulatus Kofoid & Campbell 1929
- Porpostoma grassei Corliss & Snyder 1986
- Poroecus rotundatus Hada 1935
- Potomacus pottsi Thompson 1966
- Praecalpionellites murgeanui Pop 1974
- 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
- Prosopsenus sinuatus Andre 1916
- Protocochliella ampla Jörgensen 1899
- Protocruzia labiata Kahl 1932
- Protocruzia tuzeti Villeneuve-Brachon 1940
- Protocymatocylis conicoides Kofoid & Campbell 1929
- Protolutzia hydrochoeri Cunha & Muniz 1925
- Protocymatocylis vas Kofoid & Campbell 1929
- Protophrya ovicola Kofoid 1903
- Protophryoglena macrostoma Kahl 1936
- Protophryopsis dautzenbergi Chatton & Lwoff 1926
- Protoptychostomum simplex Andre 1936
- Protoradiophryopsis ochridensis Georgevitch 1950
- Protorhabdonella striatura Kofoid & Campbell 1929
- Protorhabdonella ventricosa Schmidt 1901
- Protorhabdonella mira Kofoid & Campbell 1929
- Protospathidium bonneti Buitkamp 1977
- Protospathidium muscicola Dragesco & Dragesco-Kernéis 1979
- Protospathidium fraterculum Xu & Foissner 2005
- Protospathidium serpens Kahl 1930
- Protospathidium vermiforme Foissner, Agatha & Berger 2002
- Protospathidium terricola Foissner 1998
- Protospira mazurica Raabe 1968
- Prototapirella clypeata Buisson 1923
- Prototapirella cristata Buisson 1923
- Prototapirella intestinalis Cunha 1918
- Prototravassosia costai Artigas & Unti 1938
- Prototapirella elephantis Buisson 1923
- Psammocephalus borrori Wicklow 1982
- Psammocephalus dragescoi Wicklow 1982
- Psammocephalus lithophora Faure-Fremiet 1954
- Psammocephalus faurei Dragesco 1965
- Psammomitra brevicauda Kahl 1931
- Psammomitra retractilis Claparède & Lachmann 1858
- Pseudarcella rhumbleri Spandel 1909
- Pseudobalanion planctonicum Foissner, Oleksiv & Müller 1990
- Pseudoblepharisma lacustris Lepsi 1957
- Pseudoblepharisma crassum Kahl 1927
- Pseudoblepharisma montana Tucolesco 1962
- Pseudobuetschlia bovis Jirovec 1933
- Pseudobütschlia bovis Jirovec 1933
- Pseudocarchesium erlangense Nenninger 1948