Triloculinoides magnum Shchedrina 1964

 Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 352, Figs. 18-19: Holocene, Arctic Basin. Side and apertural views, x 30 (from Shchedrina, 1964). courtesy of Michael Hesemann https://foraminifera.eu

Image source: Goës, A. 1894. A Synopsis of the Arctic and Scandinavian recent marine Foraminifera hitherto discovered. Kong. Svenska Vetenskaps-Akademiens Handlingar 25(9): 1-127 + 25 pls. (Notae numerorum tenues mensuram indicant millimetricam). Fig. 866, 867, 869 not 868 included in the synonymy of Triloculinoides magnum by Shchedrina ( 1964).