Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 454, Figs. 1-8: U. Jurassic (M. Oxfordian), Suffield, N. Yorkshire, England. 1, Section of Iate chambers within oyster fragment, x 100; 2, 4, holotype sectioned in plane of coiling, x 100, and part of wall enlarged to show microstructure of radially arranged calcite crystals, x 500; 3, section perpendicular to plane of coiling showing Ienticuline coil at top of figure, and later irregular chambers, x 100; 5-8, diagrammatic reconstruction based on halotype showing development from early free-Iiving coiled stage (figs. 5, 6) to buttressed attached stage (figs.7, 8), approximately x 100 (from Hitchings, 1980).
