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 "Chondropterygii" nom. inval.] see Order Nantes Linnaeus, 1758
               [Genus "Acipenser" nom. inval.] see Genus Acipenser Linnaeus, 1758
                 ["Huso" nom. inval.]