Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 136, Figs. 11-13: Holocene, Falkland Islands, S. Atlantic. Umbilical side, apertural view, and spiral side of different specimens, x 64 (from Heron-Allen and Earland, 1932).