Proposed use of the Plenary Powers to designate a type species in harmony with generally accepted usage for the genus Ptychopyge Angelin, 1854 (Class Trilobita)
Published in Bull. Zool. Nom., in 1956, in volume 11, pages 359-361
Date published:1956
Published in Bull. Zool. Nom., in 1956, in volume 11, pages 359-361
Date published:1956