Leaf impressions from Late Tertiary sediments of Mahuadanr Valley Latehar District, Jharkhand, India

摘要

Systematic study on the leaf impressions, collected from the Late Tertiary sediments of Mahuadanr Valley,Latehar District, Jharkhand, revealed occurrence of four species, viz. Sweitenia mahogani Linn., Dysoxylum procerumHiern (Meliaceae), Opilia amentacea Roxb. Opiliaceae) Rhamnus purpurea Edgew. (Rhamnaceae). These pecies presently grow in the mixed deciduous forests of the Himalayan foothills, Central India, South India and also in the adjoining areas of the Mahuadanr Valley. This suggests that such type of forest was flourishing in the Mahuadanr Valley during Late Tertiary and also continued to exist till date.