Natura - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Animale Regnum nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Pisces nom. inval. - fishes see Class Pisces Linnaeus, 1758 Order Acanthopterygii nom. inval. see Order Thoracici Linnaeus, 1758 Genus Ophidion nom. inval. see Genus Ophidion Linnaeus, 1758