Foraminifera image
Orbitolina concava (Lamarck, 1816)
Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 183, Figs. 7-13: U. Cretaceous (Cenomanian), Ballon, Dept. Sarthe, France. 7, Tangential section of topotype, x 50; 8, tangential section through embryo and first chamber layer, x 26; 9, axial section through embryonal apparatus, x 57; 10, dorsal exterior of megalospheric specimen, x 5; 11, 12, axial sections of megalospheric embryonal region, x 50; 13, Favre's illustration of Lamarck's collection of O. concava, x 1, arrow pointing to lectotype designated by Schroeder (1962, p. 186); (7, 10-13, from Douglass, 1960; 8, 9, from Schroeder, 1962).
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added on 2023-07-13133 viewsForaminifera taxa Orbitolina concava (Lamarck, 1816) †checked Le Coze, François 2023-07-13
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