Praealveolina tenuis Reichel, 1933

Description:

 Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 381, Figs. 1-7: U. Cretaceous (Cenomanian). 1, Structural diagram at one pole of test showing intercalation of additional layers of chamberlets and formation of radial canals perpendicular to the preseptal canal. x 60; 2, 3, 6, La Daumasse, Beausset, France; 2, exterior of specimen with decorticated pole, x 25; 3, equatorial section of megalospheric test, x 28; 6, exterior, with chamber roof destroyed and showing the chamberlets, x 10; 4, Alcantara, near Lisbon, Portugal, axial section, x 28; 5, Provence, France, slightly oblique axial section of microspheric test, x 10; 7, structural diagram, x 50 (all from Reichel, 1937). courtesy of Michael Hesemann https://foraminifera.eu