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
               1 Genus †"Helmintholithus" nom. inval. - fossil 'worms'
               2 Genus †"Entomolithus" nom. inval. - fossil arthropods
               3 Genus †"Ichthyolithus" nom. inval. - fossil fishes
               4 Genus †"Amphibiolithus" nom. inval. - fossil reptiles and amphibians
               5 Genus †"Ornitholithus" nom. inval. - fossil birds
               6 Genus †"Zoolithus" nom. inval. - fossil mammals
               7 Genus †"Phytholithus"
               7 Genus †"Phytolithus" nom. inval. - fossil plants
               8 Genus †"Graptolithus" nom. inval.