摘要：The ammonite genus Grandidiericeras Collignon, 1961 was previously known from two species, based on six described specimens, three of which, referred to Grandidiericeras grandidierorum Collignon, 1961, are from the Middle Campanian of Madagascar, and three, referred to Grandidiericeras nagaoi Matsumoto & Saito, 1987, from the Coniacian of Japan. A single specimen from the Upper Santonian to Lower Campanian of Lake St Lucia in KwaZulu-Natal represents a new species, Grandidiericeras corrugatum.
其他摘要：The ammonite genus Grandidiericeras Collignon, 1961 was previously known from two species, based on six described specimens, three of which, referred to Grandidiericeras grandidierorum Collignon, 1961, are from the Middle Campanian of Madagascar, and three, referred to Grandidiericeras nagaoi Matsumoto & Saito, 1987, from the Coniacian of Japan. A single specimen from the Upper Santonian to Lower Campanian of Lake St Lucia in KwaZulu-Natal represents a new species, Grandidiericeras corrugatum.
其他关键词：ammonites;Grandidiericeras;Santonian;Campanian;Cretaceous;KwaZulu-Natal;South Africa
