Opinion 309 Designation, under the Plenary Powers, of a type species in harmony with accustomed usage for Normannites Munier-Chalmas, 1892 (class Cephalopoda, order Ammonoidea), a genus based upon a misidentified type species
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1954, in volume 8, issue 26, pages 345-354
Date published:1954-12-17