Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Fossilia nom. inval. - Lapides aggregati
           Order Concreta - rocks
             1 Genus Pumex
             2 Genus Stalactites
             3 Genus Tophus
             4 Genus Saxum - rock
             5 Genus Ætites
             6 Genus Tartarus
             7 Genus Calculus