Calcareous Nannofossils Biostratigraphy of Neyzar Formation in Type Section, Tange-Neyzar

Nannofossils are suitable for biostratigraphical studied since they are aboundant, planktonic, rapidly evolving and largly cosmopolitan, especially in Late Cretaceous. According to this, due to the lack of any precise Paleontological study, the nannofossils of Neyzar Formation has been investigated in type locality. This formation consists of thick- bedded glauconitic sandstone,shale and a sandy limestone bed in the upper part. The Neyzar Formation conformably overlies the Abtalkh Formation and is itself conformably overlained by the Kalat formation. As a result of this study, for the first time, 22 genera and 42 species of nannofossils have been identified. Based on these obtained nannofossils, the section is Late Maasrichtian in age, corresponding to CC25- CC26 (Sissingh,1977) (equivalent to CC25c-CC26a-b, Perch- Nielsen,1985).