Cushmania americana (Cushman, 1919)

Description:

  Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 169, Figs. 1-8: M. Eocene, Jamaica. 1, Basal section showing distribution of foramina and pillars in central shield, x 20; 2, edge of outer part of apertural face, chamberlets visible through the translucent outer shell layer, x 120; 3, exterior of outer part of apertural face, x 50; 4, axial section, x 20; 5, axial section, x 40; 6, axial section showing concave septa in region of the central shield, x 20; 7, noncentered axial section, x 40; 8, oblique side view of eroded specimen showing marginal apertures in upper left (arrow), x 40 (1, 6, 8, from Hottinger and Drohne, 1980; 2, 3, from Robinson, 1974; 4, 5, 7, from Cole, 1956).