International Commission on Zoological Nomenclature:
OPINIONS and DIRECTIONS
Ok
Okenia Menke 1830, Synopsis methodica molluscorum generum omnium: 10 (gender: feminine) (type species, by monotypy: ldalia elegans Leuckart 1828, Brev. Anim.: 15) (Gastropoda). Opinion 1014
okutanii Petit 1974 [originally in Neadmete], Venus, 33(3): 110 (specific name of the type species of Neadmete Habe 1961) (Gastropoda). Opinion 1370