Opinion 207 Designation, under the Plenary Powers, of type species in harmony with accustomed use for the genera Echinocyamus van Phelsum, 1774, and Fibularia Lamarck, 1816 (class Echinoidea)
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1954, in volume 3, issue 26, pages 339-352
Date published:1954-03-08