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 Osmerus nom. inval. see Genus Osmerus Linnaeus, 1758
               1 Eperlanus nom. inval.
               1.0 Spirinchus nom. inval. see Eperlanus nom. inval.
               2 Saurus nom. inval.