Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "Lapideum Regnum" nom. inval. - mineral kingdom
           Class "Fossilia" nom. inval. - Lapides aggregati
             Order †"Petrificata" - fossils
               Genus †"Helmintholithus" nom. inval. - fossil 'worms'
                 †"Helmintholithus Nautili compressi" nom. inval.