Marieita prismatica (Marie, 1954)

Description :

Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 125, Figs. 1-9: U. Cretaceous (L. Santonian), Lerida Prov., Spain. 1, Longitudinal axial section, intersecting beams only at the margins of the section and showing single median aperture in early chambers and cribrate trematophore in later ones, x 100; 2, specimen in glycerine viewed in reflected light, x 35; 3, apertural view showing many openings in the trematophore, SEM, x 70; 4, 5, longitudinal sections of the concave sided test, center of fig. 5 nearly tangential and intersecting many short vertical beams, but margins of the section intersect the undivided part, deeper cut section of fig. 4 intersects fewer beams, both x 25; 6, side view, SEM, x 50; 7, transverse section, showing short thick radial beams projecting inward from the flat sides of the test, x 100; 8, longitudinal section cutting the open central lumen of the chambers, x 25; 9, transverse section intersecting the arching trematophore near the center and opening into the chamber Iumen at the test angles, radial beams intersected at upper right of figure, x 100 (1, 3-7, 9, from Loeblich and Tappan, 1986).