Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Quadrupedia nom. inval. - quadrupeds see Class Mammalia Linnaeus, 1758 Order Ferae nom. inval. see Order Ferae Linnaeus, 1758 Genus Ursus nom. inval. see Genus Ursus Linnaeus, 1758 Wickhead Angl., nom. inval.