Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Aves Plinius, nom. inval. - birds see Class Aves Linnaeus, 1758 Order Anseres nom. inval. see Order Anseres Linnaeus, 1758 Genus Anas nom. inval. see Genus Anas Linnaeus, 1758 Anas Domestica nom. inval. see Boschas nom. inval.