Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 147, Figs. 9-13: U. Cretaceous (Senonian). 9, 10, England, transverse half-section (BMNH P41238), and longitudinally etched specimen (BMNH P41239) x 22; 11, Mousehold, England, longitudinal thin section showing early coil, coarsely agglutinated wall, and irregular septa, x 25; 12, 13, France, side and top views of holotype, a broken specimen, showing internal radial partitions, x 20.
