Opinion 422 Determination under the Plenary Powers of the species to which the specific name mammillatus Schlotheim, 1813, as published in the combination ammonites Mammillatus shall apply and designation under the same Powers of the foregoing species to be the type species of the genus Douvilleiceras de Grossouvre, 1893 (class Cephalopoda, order Ammonoidea)

International Commission on Zoological Nomenclature

Article: Opinion 422 Determination under the Plenary Powers of the species to which the specific name mammillatus Schlotheim, 1813, as published in the combination ammonites Mammillatus shall apply and designation under the same Powers of the foregoing species to be the type species of the genus Douvilleiceras de Grossouvre, 1893 (class Cephalopoda, order Ammonoidea)

Title

Opinion 422 Determination under the Plenary Powers of the species to which the specific name mammillatus Schlotheim, 1813, as published in the combination ammonites Mammillatus shall apply and designation under the same Powers of the foregoing species to be the type species of the genus Douvilleiceras de Grossouvre, 1893 (class Cephalopoda, order Ammonoidea)