International Commission on Zoological Nomenclature
International Commission on Zoological Nomenclature
OPINIONS and DIRECTIONS
works:
O
Oken L. 1815-1816. Okens Lehrbuch der Naturgeschichte, Volume 3 (Zoology) (rejected for nomenclatural purposes because the author did not apply the principles of binominal nomenclature). Opinion 417
Orbigny A.D. d', 1849-1852. Prodrome de Paleontologie stratigraphique universelle des Animaux Mollusques et Rayonnes faisant suite au Cours elementaire de Paleontologie, 3 volumes (the names introduced in this work are not to be treated as nomina nuda). Opinion 126, Direction 32