Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| kingdom | Chromalveolata Adl et al., 2005 |
| superphylum | Alveolata Cavalier-Smith, 1991 - alveolate |
| phylum | Ciliophora Doflein, 1901 - ciliate |
| subphylum | Intramacronucleata Lynn, 1996 |
| class | Oligohymenophorea de Puytorac et al,1974 |
| subclass | Peritrichia Stein, 1859 |
| order | Sessilida Kahl, 1933 |
| family | Vorticellidae Ehrenberg, 1838 |
| genus | Vorticella Linnaeus, 1767 |
| species | Vorticella microstoma Ehrenberg, 1830 |