Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 3. 1972. (Budapest, 1972)
CUSHMAN, J. A. & TODD, M. R. (1943): Poraminifera of the Corsicana Marl. - Contr. Cushman Lab. Poram. Res., 19 (3), pp. 49-72, pis. 9-12, Sharon. Mass. CUSHMAN, J. A. & T^DD, M. R. (1946): A foraminiferal fauna from the Paleocene of Arkansas. - Contr .Cushman Lab. Poram. Res., 22 (2), pp. 45-65, pi. 9-11, Sharon, Mass. CUVILLIER, J. (1930): Revision du Nummultique Egyptien. - Mem. Inst. Egypte, 16 . 371 pp., Le Caire. CUVILLIER, J. (1934): Les "Esna Shales" et leur Veritable Signification Stratigraphie. - Bull. Inst. Egypte, 16. (2), pp. 133-137, Le Caire. DAM, A. TEN & SIGNAL, J. (1950): Some new species of Poraminifera from the Dano-Montian of Algeria. - Contr. Cushman Found. Poram. Res., 1, pp. 31-37, pi. 2, Sharon, Mass. EAMES, F. E. , BANNER, F.T. , BLOW, W. H. & CLARKE, W. J. (1962): Fundamentals of Mid-Tertiary stratigraphical correlation. pp. 1-163, pis. 1-17. (Univ. Press) Cambridge. ELLIS, B. F. & MESSINA, A. R. (1940): Catalogue of Foraminifera. Spec. Publ. Amer. Mus. Natur. Hist., with Supplements, New York. EL NAGGAR, Z. R. (1966): Statigraphy and Planktonic Poraminifera of the Upper Cretaceous - Lower Tertiary succession in the Esna - Idfu region, Nile Valley, Egypt. U.A.R. - Bull. British Mus. (Nat. Hist.) Geol. Suppl. 2, pp. 1-291, pis. 123, Text.figs. 1-18, London. PARIS, M. I. (1947): The Contact of the Cretaceous and Eocene rocks in the Taramsa-Tukh area. (Quena,Upper Egypt). - Bull. Inst. Egypte, 28, pp. 73-85, Le Caire. FINLAY, H. J. (1939): New Zealand Foraminifera: Key species in Stratigraphy, Nr. 2. - Transact. Roy. Soc. New Zeal., 69, pp. 89-128, pis. 11-14, Wellington. GALLITELLI, E. M. (1957): A revision of the foraminiferal Family Heterohelicidae. - U.S. Nat. Mus. Bull., 215., pp. 133-154, pis. 31-34, Washington. GLAESSNER, M. F. (1937): Studien über Foraminiferen aus der Kreide und dem Tertiär des Kaukasus. I. Foraminiferen der ältesten Tertiärschichten des Nordwest-Kaukasus. - Probl . of Paleontology, 2-3, pp. 349-408, Taf. 1-5, Moskau.
