Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Superphylum †Psilophytanae Doweld (2001) Phylum †Psilophytophytaᵀ Zimmerm. (1930) [monotypic] Class †Psilophytopsidaᵀ Kidst. & Lang (1917) [monotypic] 1 Order †Psilophytalesᵀ Pia (1924)