Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 441, Figs. 4-5: Miocene (Tortonian), Badener Tegel, Baden Austria. 4, Two-chambered specimen showing nonspinose globular proloculus, SEM, x 28; 5, three-chambered specimen showing globular later chambers separated by long narrow necks and phialine rim of aperture, SEM, x 30 (new figures in Loeblich and Tappan, 1987).