Phylum Amoebozoa Lühe, 1913
   Subphylum Lobosa Carpenter, 1861 see Infraphylum Lobosa Carpenter, 1861
     Class Tubulinea Smirnov et al., 2005
       Order Euamoebida Lepşi, 1960
         Family Hartmannellidae Volkonsky, 1931
           Genus Hartmannella Alexeieff, 1912
             1 Hartmannella cantabrigiensis Page, 1974
             x1 [Hartmannella vermiformis Page, 1967] see Vermamoeba vermiformis (Page, 1967)
             x2 ["Hartmannella" abertawensis Page, 1980] see Nolandella abertawensis (Page, 1980)