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 | Postciliodesmatophora Gerassimova & Seravin, 1976 |
| class | Heterotrichea Stein, 1859 |
| order | Heterotrichida Stein, 1859 - heterotrichs |
| family | Stentoridae Carus, 1863 |
| genus | Stentor Oken, 1815 |
| species | Stentor muelleri (Ehrenberg, 1831) Oken, 1815 |