Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Domain Eucaryota]
             [Subdomain Chlorota Doweld (2001)]
               [Kingdom Peridiniobiota Starobogatov ex Doweld (2001)]
                 [Subkingdom Peridiniobiotinaᵀ Doweld (2001)]
                   [Phylum Gregarinozoa Kussakin & Drozdov, 1998]
                     [Class Gregarinateaᵀ Grasse, 1953]
                       1 [Order Exoschizonida Doweld, 2001 [monotypic]]
                       2 [Order Gregarinidaᵀ Poche, 1913] see Subclass Gregarinasina Dufour, 1828
                       3 [Order Schizocystida Doweld, 2001 [monotypic]]