Natura - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Animale Regnum nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Amphibia nom. inval. - reptiles and amphibians see Class Amphibia Linnaeus, 1758
           Order Serpentia nom. inval. see Order Serpentes Linnaeus, 1758
             Genus Crotalophorus Linnaeus, 1748, nom. inval.