Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 24, Figs. 18-19: L. Carboniferous, L. Mississippian (Kinderhookian), Missouri, USA. Two views of holotype, showing groove on the side where it was attached, x 78 (from Conkin et al., 1968).