Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 2. 1970-71. (Budapest, 1971)
rely visible because of the sediment filling the umbilicus). Surface reticulate, the last chamber smoother, more finely perforated than the others. Note. Differs from the Globigerina tripartita group by having four chambers in the last whorl, and from G. eocaena in its apertural features. It may have been developed from G. tripartita by gradual growth of the abortive chamber, during the Late Eocene. Occurrence. Common in the lower part of the Buda Marl (Cylindroclavulina cylindrica Zone); disappears in the Eocene/Oligocene transition. Budapest region, Büki: Mountains foreland. Globigerina liverovskae (Bykova) (Plate III. 13/a-c) Globigerina khadumica sp.n. - Bykova, I960. Tr. Vnigrl 193, Geol. Sbor. 5. P* 322 pi. 7. figs. 4-7. Globigerina liverovskae (Bykova I960) Samuel. 0. and Salaj , J. 1968. pp. 122-123, pl. 7, figs. 6/a-c, text fig. 24 AB. Description. Test very small, of only two whorls, with 3 to 5 1/2 chambers in the second one. Chambers loosely coiled, dorsal surface flat. Chambers slowly growing, inflated. Sutures deeply cut, radial, right. Umbilicus small and deep. Aperture usually not observable (due to poor state of conservation). If yes, it is a low fissure from umbilicus to rim. Occurrence. Kenawy (1968) mentions this from in Hungary, from the Globorotalia opima Zone, under the name of Globigerina postcretacea. It appears In the basal beds of the Buda Marl, and persists up to the Kiscell Clay inclusively. Common