Calliotectum piersonorumCalliotectum piersonorum is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes.Description Bouchet, P.; Poppe, G. T.. A review of the deep-water volute genus Calliotectum. in: Bouchet, P. Résultats des Campagnes MUSORSTOM 14. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie. 167: pp. 499–525..