Description: Argonauta argo specimen in the Zoological Museum (Naturhistorisk Museum), Oslo, Norway. Date: 11 September 2009. Source: Own work. Author: Daderot. Permission(Reusing this file): Public domain.
Description: Haliphron atlanticus. Date: 1895. Source: from Résultats des campagnes scientifiques accomplies sur son yacht par Albert Ier, prince souverain de Monaco fascicule #9 url. Author: J. de Guerne & Ch. Richard.