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
               1 [Genus "Raja" nom. inval.] see Genus Raja Linnaeus, 1758
               2 [Genus "Squalus" nom. inval.] see Genus Squalus Linnaeus, 1758
               2 [Genus "Sqvalus" nom. inval.] see Genus Squalus Linnaeus, 1758
               3 [Genus "Acipenser" nom. inval.] see Genus Acipenser Linnaeus, 1758
               4 [Genus "Petromyzon" nom. inval.] see Genus Petromyzon Linnaeus, 1758