Feurtillia frequens Maync, 1958

Descrição:

Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 100, Figs. 4-9: Jurassic, Switzerland. 4, Axial section, x 64; 5, centered equatorial and longitudinal section showing many coils, thick septa, and alveolar outer wall, x 100; 6-8, face view and opposite sides of holotype, x 64; 9, equatorial section showing thick septa, x 64 (4, 6-9 from Maync, 1958; 5, from Hottinger, 1967).