chromalveolates
see Supergroup Chromalveolata Adl et al., 2005
Kingdom Protozoa Goldfuss, 1818 - protozoa
Infrakingdom Alveolata Cavalier-Smith, 1991
see [unranked] Alveolata Cavalier-Smith, 1991
Phylum Ciliophora Doflein, 1901 - ciliates
Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
Infraphylum Spirotrichia Bütschli, 1889 [monotypic]
Class Spirotrichea Bütschli, 1889
Genus Protocruzia de Faria, da Cunha & Pinto, 1922