organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     amoeboid protists
       Order Arcellinida Kent, 1880 - shelled lobosid amebas
         Suborder Difflugina R. Meisterfeld, 2000[2002] see Suborder Difflugiina R. Meisterfeld, 2002
           Family Centropyxidae Jung, 1942
             1 ?Genus Oopyxis Jung, 1942
             2 Genus Centropyxis Stein, 1857
             3 Genus Centropyxiella Valkanov, 1970
             4 Genus Proplagiopyxis Schönborn, 1964