Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Fossilia nom. inval. - Lapides aggregati
           Order Petrificata - fossils
             Genus Ichthyolithus nom. inval. - fossil fishes
               1 Ichthyolithus incertæ vel certæ, totalis vel part. speciei nom. inval.
               1.0 Ichthyolithus nom. inval. see Ichthyolithus incertae vel certae, totalis vel part. speciei nom. inval.
               2 Ichthyolithus dentis carchariæ nom. inval.
               2.0 Glossopetra nom. inval. see Ichthyolithus dentis carchariae nom. inval.
               3 Ichthyolithus ovorum nom. inval.
               3.0 Oolithus nom. inval. see Ichthyolithus ovorum nom. inval.
               4 Ichthyolithus ossis palatini nom. inval.
               4.0 Bufonites nom. inval. see Ichthyolithus ossis palatini nom. inval.