• journal_title：Geological Magazine
• Contributor：Bimal K. Samanta
• Publisher：Cambridge University Press
• Date：1968-
• Format：text/html
• Language：en
• journal_abbrev：Geological Magazine
• issn：0016-7568
• volume：105
• issue：2
• firstpage：124
• section：Articles

Based on the distribution of several stratigraphically important species three distinct larger foraminiferal zones are recognized in the middle-upper Eocene succession of Garo hills, Assam, India. A comparison of these zones with larger foraminiferal assemblages from other middle-upper Eocene successions in the Indian region is attempted and observations are made on the demarcation of the middle and upper Eocene boundary and the classification of the upper Eocene succession in this region.