Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 5. 1974. (Budapest, 1974)

the T. munda becomes deeper and narrower. In the profile upwards the apertural arch grows higher, reaching the state when the aperture of the penultimate chamber is clearly visible through the last one. The earliest typical Turborotalia obesa appears at the Rupelian/Egerian boundary. 4. Turborotalia increbescens - Globigerina ampliapertura evolution lineage Pl. H., figs. la-6c. This evolution lineage was recognized and the transitional forms were figured first by BLOW and BANNER (1962). In Hungary the evolution is similar as that in Tanganyika

. The first transitional forms are found in the Bryozoan Marl of Buda, just where the typical form appears (Turborotalia cocoaensis Zone)

. Transitional forms can also be found as high as the Turborotalia increbeacens Zone of the Buda Marl. 5. Globigerina tripartita tripartita - G. tripartita tapuriensis evolution lineage Pl. X., figs 9-12. The evolutional connection of the two subspecies has been recognized by BLOW and BANNER (1962). The change of the Globigerina tripartita tripartita follows the same way that described by these authors. In Hungary, the earliest typical Globigerina tripartita tapuriensis appears within the Buda Marl, marking the lower boundary of the Turborotalia increbescens Zone. 6. Globigerina ouachitaensis ouachitaensis - G. ouachitaensis gnaucki evolution lineage PI. Vm., figs. la-4c. This evolution lineage was recognized by BLOW and BANNER (Í962); the transitional forms were figured by BERGGREN (1969b). The transition in Hungary is similar to that in Northern Europe

. The earliest typical forms appear in the upper part of the Catapsydrax gortanii gortanii Zone, the transitional forms can be found from the lower part of this zone up to the top of the Turborotalia increbescens Zone.