living organisms
 see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
  
 Superkingdom Eukaryotae
 see Domain Eukaryota Chatton, 1925
    
 Kingdom Animalia Linnaeus, 1758 - animals
      
 Subkingdom Protozoa Goldfuss, 1818
 see Kingdom Protozoa Goldfuss, 1818
        
 Phylum Ciliophora Doflein, 1901 - ciliates
          
 Class Oligohymenophora
 see Class Oligohymenophorea de Puytorac et al., 1974
            
 Subclass Hymenostomata
 see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
              
 Order Hymenostomatidaᵀ Delage & Hérouard, 1896
 see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
                
 Suborder Tetrahymenina Fauré-Fremiet, 1956
 see Order Tetrahymenida Fauré-Fremiet, 1956
                  
 Family Sagittariidae R. Grandori & L. Grandori, 1935
                    
 Genus Sagittaria R. Grandori & L. Grandori, 1934