Description Roemer, F. A. (1838). Cephalopoden des Nord-Deutschen tertiaren Meersandes. Neues Jahrbuch fur Mineralogie, Geognosie, Geologie und Petrefakten-Kunde. 381-394., available online athttps://www.biodiversitylibrary.org/page/35870965
page(s): p. 383, pl. 3, fig. 11.Author Le Coze, FrançoisJPG file - 17.78 kB - 97 x 85 pixels
Extra information Orientation: 1: Horizontal (normal)