Opinion 685 Ammonites laevigata Lamarck, 1822 (Cephalopoda): suppressed under the Plenary Powers ; together with the validation of two nominal species Named ammonites Laevigatus by J. de C. Sowerby, 1827
Published in Bulletin of Zoological Nomenclature, in 1963, in volume 20, pages 421-422
Date published:1963