Species (22.489)
- Prorodon garganellae
- Prorodon farteus
- Prorodon magnus Dragesco 1960
- Prorodon laurenti Dragesco 1966
- Prorodon hivernalis
- Prorodon meridionalis Dragesco 1966
- Prorodon nucleolatus ssp. nucleolatus
- Prorodon parafarctus
- Prorodon ovalis Dragesco 1970
- Euplotopsis encystica Yonezawa 1985
- Prorodon rabbei
- Stentor niger sensu Kawakami 1984
- Prorodon trichocystus Dragesco 1954
- Prorodon vermiforme Dragesco 1960
- Prorodonopsis coli
- Protoradiophrya werestschagini
- Prototapirella gorillae
- Psammophrya arenicola
- Predurostyla arenarium
- Procondylostoma ancestralis Villeneuve-Brachon 1940
- Propyxidium asymmetricum
- Prosicuophora david
- Proterhabdonella simplex
- Proteus anguinus
- Protocruzia pegerrima Cohn 1866
- Protospirella intestinalis
- Protoradiophrya fissispiculata
- Prototrachelocerca caudata Dragesco & Raikov 1966
- Prototrachelocerca caudatus Dragesco & Raikov 1966
- Prototrachelocerca fasciolata Sauerbrey 1928
- Pseudarcella feugueuri
- Pseudarcella campanula
- Pseudarcella patella
- Pseudarcella italica
- Nassula parva Kahl 1928
- Pseudoamphisiella lacazei Maupas 1883
- Tintinnopsis tubulosa ssp. minima
- Pseudoprorodon pluvialis
- Pseudoprorodon niveaus
- Pseudoprorodon nivaeus Ehrenberg
- Pseudoprorodon protrichocystus Dragesco 1960
- Pseudoprorodon soosiae
- Polymorphina gibba d'Orbigny 1826
- Polypus vulgaris
- Proplectella biangulata
- Propyxidium cothurnioides
- Propyxidium cothurnoides Kent 1881
- Propyxidium juliae
- Propyxidium longicollum
- Propyxidium piscicolae
- Propyxidium tectiforme
- Propyxidium sinuosum
- Propyxidium ventriosa
- Epitholiolus attenuatus Foissner 1983
- Pseudostrombidium planctonicum Horvath 1933
- Pseudothuricola epizoica
- Pseudouroleptus humicola
- Pseudovorticella magnistriata Foissner 1975 ssp. magnistriata
- Pseudovorticella difficilis Kahl 1933
- Pseudovorticella mollis
- Tintinnopsis conus
- Pseudovorticella chlorelligera Kahl 1935
- Pseudovorticella nana
- Pseudovorticella papillata
- Pseudovorticella nebulifera
- Pseudovorticella zooanthelligera
- Psilotricha dragescoi
- Ptychocylis urnula Claparède & Lachmann
- Pseudovorticella fasciculata Müller 1773
- Ptychostomum chattoni
- Ptychostomum drawidi
- Ptychostomum magnum
- Ptychostomum paludinarum Stein 1861
- Metopus contortus Quennerstedt 1867
- Pupina japonica
- Cyclospora caryolytica
- Ptyssostoma thalassemae Hentschel 1927
- Pullenia compressiuscula
- Pullenia jarvisi
- Pullenia miocenica
- Metopus inversus Jankowski 1964
- Pupina difficilis
- Pupina speculum Tapparone-Canefri
- Pupina dohertyi
- Pseudothuricola dyonisii Penard 1914
- Pseudotextularia globulosa
- Pseudovorticella micata
- Pseudovorticella punctata
- Pseudovorticella stilleri
- Pterodinium cornutum
- Pterodinium magnoserratum
- Ptychocylis calyx
- Ptychocylis glacialis
- Ptychocylis obtusa ssp. obtusa
- Ptychocylis urnula Claparède & Lachmann ssp. urnula
- Quinqueloculina fusca Brady 1870
- Raabella parva
- Radiophrya gracilis
- Radiophrya intermedia
- Radiophrya hoplites