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 Ornitholithus nom. inval. - fossil birds
               1 Ornitholithus totalis, certi vel incerti generis nom. inval.
               1.0 Avis petrifacta nom. inval. see Ornitholithus totalis, certi vel incerti generis nom. inval.
               2 Ornitholithus partialis nom. inval.