Direction 81 Confirmation of the Position on the Official List of Generic Names in Zoology of the generic names Gypaetus Storr, 1784, Anas Linnaeus, 1758, Nyctea Stephens, 1826, and Vireo Vieillot, 1807 (class Aves) and correction of the entries made in Regard thereto (Direction supplementary to Opinion 67)
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 1E, pages 315-334
Date published:1957