14-16: Eocene, 4.5 km. W of Guanajay, Pinar del Rio Prov., Cuba. Umbilical side, edge, and spiral view of holotype (USNM Cushman Coll. 23312), x 36 (from Loeblich and Tappan, 1964).
Copyright: Loeblich and Tappan, 1964 / Le Coze, François
Sammlung: USNM Cushman Coll.