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 "Mugil" nom. inval.] see Genus Mugil Linnaeus, 1758 ["Mugil" Plinius, nom. inval.]