Valvulina triangularis d'Orbigny in Guérin-Méneville, 1832
Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 202, Figs. 6-7: Eocene, France. Side and apertural views, x 50 (from Cushman, 1937).