Project 224: T. Huelsken, H. Wägele, B. Peters, B. Mather, M. Hollmann. 2011. Molecular analysis of adults and egg masses reveals two independent lineages within the infaunal gastropod Naticarius onca (Röding, 1798) (Caenogastropoda: Naticidae). Molluscan Research. 31 (3):141-151.