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 Jumenta nom. inval. see Class Mammalia Linnaeus, 1758 Genus Equus nom. inval. see Genus Eqvus Linnaeus, 1758 Onager Plinius, nom. inval.