Cylichnium nanum Valdes 2008

Valdes 2008. Deep-sea "cephalaspidean" heterobranchs (Gastropoda) from the tropical southwest Pacific. Heros, Virginie; Cowie, Robert H.; Bouchet, Philippe[Eds]. Tropical deep-sea benthos Volume 25., Museum national d'Histoire naturelle, Paris, 2008: 1-805. Chapter pagination: 587-792