Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 2. 1970-71. (Budapest, 1971)

filled with sediment. Aperture is a high, asymmetrical arch, from umbilicus to rim. Test wall coarsely perforated. Surface of the last chamber smooth, Note. On one specimen (Table V. 29 a-c) there is a supplementary aperture on the dorsal side of the last chamber. A similar case was reported by Berggren (1959) concerning Globigerina angiporoides from the Upper Rupelian. Occurrence. Common in the Cylindroclavulina cylindrica Zone of the Buda Marl. Disappears at the base of the Eocene/Oligocene transition. Budapest region, Bükk Mountains foreland. Globorotalia (Turborotalia) opima nana Bolli (Plate VI. 30 a-c, 3I a-c) Globorotalia opima nana Bolli n. sp.

, n. ssp.

, 1957. Bull.

'US. Nat. Mus. 215, P. 118, pi. 28, figs. 3 a-c. Description. Test of small to medium size. Two whorls. Eive chambers in the first whorl, four in the second. Dorsal surface flat, or compressed; the ventral one rather convex. Chambers tightly coiled, inflated. Sutured depressed,right

, radial. Umbilicus very small. Aperture is a low arch, from rim to umbilicus, with a big, flap—like lip. Test wall coarsely perforated. Occurrence. It is present in all horizons of the Buda Marl in both regions. Very abundant in some samples.