Calcareous Nannofossils from Simla Hills, (Himalaya, India) with a Discussion of their Age in the Tectono-Stratigraphic Column

The nannofossils and related coccolithophorids in the green shale of Krol B horizon playa significant role in removing the serious hanclicap of the absence of macrofossils for evaluating the stratigraphic status of Krol series. With the help of light and electron microscope the following forms were identified.

Tergestiella margereli (Noel) Rein, Microrhabdulus orbitosus Shumenko, Micula Staurophora (Vekshina) Gardet, Stradner, Zygolithus concinnus Martini, Tetralithus cf. gothicus Deflandre, Lucianorhabdus cayeuxi Deflandre, Lithraphidites carniolensis Deflandre, Discorhabdus sp, Deflandrius sp. and ex gr. Nannoconus. Most of these forms which also occur in other parts of the world indicate an age of Upper Jurassic to Upper Cretaceous to the Krol B horizon of Simla area.