F. Hemming. 1954. 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. Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature 3:209-216 [M. Clapham/M. Clapham]