Organic remains from Dharwar sediments

Abstract

Microfossils are recovered from the Dharwar-Shimoga Schist belt of the Archaean complex of Mysore State. The fossils are assigned to 13 genera and 21 species of microfossils grouped under Cyanophyceae, Chlorophyceae and Sphaeromorphitae. Unidentifiable organic plates perhaps of animal origin are also recorded. A detailed comparison with the available Precambrian records in the literature is made. It is concluded that the Dharwar microbiota is more advanced than the Early Pre-cambrian and more primitive than the Late Precambrian microbiota. Thus a Middle Precambrian to Early Late Precambrian age is assigned.