[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Supergroup Excavata Cavalier-Smith, 2002 see [unranked] Excavata Cavalier-Smith, 2002
       Heterolobosea Page & Blanton, 1985 see Class Heterolobosea Page & Blanton, 1985
         Vahlkampfiidae Jollos, 1917
           1 Genus Heteramoeba Droop, 1962
           2 Genus Naegleria Aléxéieff, 1912
           3 Genus Percolomonas T. Fenchel & D.J. Patterson, 1986
           4 Genus Psalteriomonas Broers, Stumm, Vogels & Brugerolle, 1990
           5 Genus Tetramitus Perty, 1852
           6 Genus Vahlkampfia Chatton & LaLung-Bonnaire, 1912