Natura - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Lapideum Regnum nom. inval. - mineral kingdom
         Class Fossilia nom. inval. - Lapides aggregati
           Order Petrificata - fossils
             38 Genus Helmintholithus nom. inval. - fossil 'worms'
             39 Genus Entomolithus nom. inval. - fossil arthropods
             40 Genus Ichthyolithus nom. inval. - fossil fishes
             41 Genus Amphibiolithus nom. inval. - fossil reptiles and amphibians
             42 Genus Ornitholithus nom. inval. - fossil birds
             43 Genus Zoolithus nom. inval. - fossil mammals
             44 Genus Phytholithus
             44.0 Genus Phytolithus nom. inval. - fossil plants
             45 Genus Graptolithus nom. inval.