Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" nom. inval. - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Class "Pisces" nom. inval. - fishes] see Class Pisces Linnaeus, 1758
             [Order "Acanthopterygii" nom. inval.] see Order Thoracici Linnaeus, 1758
               [Genus "Cottus" nom. inval.] see Genus Cottus Linnaeus, 1758
                 ["Cottus" nom. inval.]