Sohanian vs Madrasian culture

Sohan culture represented by peddle tools are chopper chopping tool tradition. Robin Dennel 1980 raised doubt about this.

Madrasian. Buy facial for hand axe cleaver culture. usually quartzite but also basalt in Maharashtra. Granite in jhansi. 

it was believed that Central Narmada basin was the meeting point of these to culture Krishnaswamy 1951. But later it was revealed that no sufficient evidence for or these culture as distinct groups Jaiswal 1978. Acheilian artefacts are found in sub Himalayan region where chopper chopping is dominant and vice versa. Mohapatra 1990.