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 "Plagiuri" nom. inval.] see Class Mammalia Linnaeus, 1758 [Genus "Balaena" nom. inval.] see Genus Balaena Linnaeus, 1758 ["Nord-Kaper" Martens, 1675, nom. inval.] see Nord-Kaper Wallfisch Martens, 1675, nom. inval.