Opinion 496 Use of the Plenary Powers to secure the continued use in their accustomed sense of the generic names Olenus Dalman, [1827], and Paradoxides Brongniart, 1822 (class Trilobita)
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 17, issue 18, pages 323-348
Date published:1957-12-17