Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Pisces nom. inval. - fishes see Class Pisces Linnaeus, 1758
           Order Malacopterygii nom. inval. see Class Pisces Linnaeus, 1758
             Genus Muraena nom. inval. see Genus Muraena Linnaeus, 1758
               Serpens mar. nom. inval.