Opinion 198 Suppression, under the Plenary Powers, of the generic names Lomatoceras Bronn, 1834, and Monoprion Barrande, 1850 (class Graptolithina), and validation of the generic name Monograptus Geinitz, 1852
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1954, in volume 3, issue 17, pages 217-228
Date published:1954-01-21