Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 2. 1970-71. (Budapest, 1971)
cylindrica Zone» Budapest region, Bükk Mountains "foreland» Globigerina tripartita Kocb (Plate V. 25/a-c) Globigerina bulloides d , Orbigny var. tripartita Koch, 1926 B. P. Ellis - A*H. Messina Catalogue of Foramlnifera. Globigerina tripartita Koch-Blow et Banner 1962, in» Eames et al.: Fundamentals of Mid-Tertiary ,etc. pp. 96-97* pl. X.A-F, fig. 18. Description. Test big, of three whorls. Contours circular. Dorsal surface flat, the ventral one more convex. Chambers rapidly growing, strongly embracing each other. Four chambers in the early whorls, three in the last one, which is usually strongly compressed; however, "high" Variaties occur as well. Sutures somewhat deepened, right. Apertural face flattened, well differentiated from the other parts of the last chamber. Aperture is a low, short arch, with a well developed lip; intraumbilical. Umbilicus narrow, filled with sediment. Test wall rugose, reticulate. Often there is a small, abortive chamber, covering the umbilicus. Note, Ancestor of Globigerina tapuriensis; they are very similar to each other. (See Blow et Banner. 1962.) Occurrence. Very frequent in the Cylindroclavulina cylindrica Zone; .disappears in the Eocene/Oligocene transitional beds.. Budapest region, Bükk Mountains foreland. Genus: GLOBIGERINITA Brönnlmann, 1951 Globigerinita cryptomphala (Glaessner) .(Plate V. 26/a-c) Globigerina bulloides d'Orbigny var. cryptomphala Glaessner, 1937* Î 1 * Ellis - A, E. Messina, Catalogue of Foraminifera.
