Keywords: ClevicerasElegans.png en Cleviceras elegans 1898-01-01 https //archive org/details/HugO 1898-KenntnisDerLias-UndDoggerAmmonitenDerFreiburgerAlpenPart Hug O 1898 - Kenntnis der Lias- und Dogger Ammoniten der Freiburger Alpen Part 1 Scant taken from Internet Archive https //archive org other versions PD-old-70-1923 Harpoceratinae |