Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 284, Figs. 13-14: U. Carboniferous, Taiyuan series, China. Type species of Grabauina J. S. Lee. 13, Sagittal section of crushed specimen, x 30; 14, axial section of lectotype, x 30 (from J. S. Lee, 1924).