Opinion 197 Suppression, under the Plenary Powers, of the generic name Graptolithus Linnaeus, 1768 (class Graptolithina) and of the specific name scalaris Linnaeus, 1768, as published in the combination Graptolithus Scalaris
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1954, in volume 3, pages 207-216
Date published:1954