Extensive exploration in the Baripada sadar, Bisoi, Rairangpur and Kar
anjia Tehsils, spanning two seasons in 1994 and 1995, resulted in the
discovery of 4 lower paleolithic sites and 9 Mesolithic sites in the M
ayurbhanj district, Orissa. Many of these sites are primary in nature
and have preserved habitational deposits. Handaxes and choppers made o
f quartzite are the main components of the lower palaeolithic industry
. In Mesolithic sites, in addition to microlithic artifacts, the most
noteworthy feature of the assamblage is the common occurrence of heavy
-duty implements, the raw materials selected for these are different f
rom those used for manufacturing microliths. A summary effort is being
made by the authors at integrating and interpreting the data recovere
d from the sites.