Direction 56 Completion and in certain Cases correction of entries relating to the names of genera belonging to the classes Pisces, Amphibia and Reptilia made in the Official List of Generic Names in Zoology in the period up to the end of 1936
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1956, in volume 1D, issue D.17, pages 337-364
Date published:1956-12-20