ctrl date ranges,,,(To indicate BC in  database),Start,Finish
Early Neolithic,,,-,4100,3300 cal BC
Middle Neolithic,,,-,3300,2800 cal BC
Late Neolithic,,,-,2800,2200 cal BC
Late Neolithic/EBA - Beaker,,,-,2400,1700 cal BC
Early Bronze Age,,,-,2000,1500 cal BC


radiocarbon date ranges for early pottery,,,,,
early early Neolithic,EENeo,carinated bowl,-,4100,3600 cal BC
early Neolithic,EN,plain/dec bowl,-,3700,3300 cal BC
early/middle Neolithic,EMN,PW-Ebbsfleet,-,3600,3000 cal BC
Middle Neolithic,MN,PW-Peterborough Ware- Mortlake/Fengate,,3300,2800 cal BC 
Late Neolithic,LN,GW-Grooved Ware,-,2900,2200 cal BC
Late Neolithic early Bronze Age,LNEBA,BKR-Beaker,-,2400,1700 cal BC
Early early  Bronze Age to final Early Bronze Age,EBA,"Food Vessel, Collared Urn, Biconical Urn. ",-,2200,1500 cal BC