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 Esox nom. inval. see Genus Esox Linnaeus, 1758 Lucius nom. inval. see Esox lucius Linnaeus, 1758