Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 365, Figs. 7-11: M. Eocene, Chapelton Formation (Yellow Limestone Group), Jamaica. 7, Tangential section showing internal partitions, x 26; 8, equatorial section of megalospheric test, x 30; 9, 10, diagrammatic apertural and side views, about x 25; 11, central part of microspheric test in axial section, x 73 (from Robinson, 1974).
