Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Pisces nom. inval. - fishes see Class Pisces Linnaeus, 1758 Order Malacopterygii nom. inval. see Class Pisces Linnaeus, 1758 Genus Cyprinus nom. inval. see Genus Cyprinus Linnaeus, 1758 Leuciscus nom. inval.