Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
Biota
"neomura"
Domain Eukaryota Chatton, 1925 - eukaryotes
"neokaryotes" - mitochondrial eukaryotes
"neozoa"
Superkingdom Corticata Lankester, 1878
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Harosa Cavalier-Smith, 2010
Infrakingdom Halvaria Cavalier-Smith, 2010
Superphylum Alveolata Cavalier-Smith, 1991
Phylum Ciliophora Doflein, 1901 - ciliates
Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
Class Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans
Subclass Peniculia Fauré-Fremiet, in Corliss, 1956
Order Urocentrida Jankowski, 1980
Family Parameciidae Dujardin, 1840
Genus Parameciumᵀ Müller, 1773
Paramecium putrinum Claparède & Lachmann, 1859