Calcareous nannofossil assemblages were examined from three sections s
ampled in Israel, and a detailed zonation was erected based on the mos
t continuous of these. The following zones were identified: Quadrum tr
ifidum, Arkhangelskiella cymbiformis, Lithraphidites quadratus, Nephro
lithus frequens and Micula prinsii. The Arkhangelskiella cymbiformis Z
one was further subdivided into two subzones: Reinhardtites levis and
Lithraphidites praequadratus. The palaeogeographic and palaeoenvironme
ntal setting of the sections suggested by the assemblages, are discuss
ed.