User:Mike Christie/Sandbox4

The earliest lower palaeolithic sites in Britain date to about 700,000 BP.Alexander Lang and Paul Preston, "The Palaeolithic Period", in Adkins, Adkins, & Leach, Handbook, pp. 1–3.

The boundary between the lower and middle palaeolithic in Britain falls between about 245,000 BP and 180,000 BP.

The boundary between the middle and upper palaeolithic in Britain falls between about 50,000 BP and 25,000 BP. The mesolithic begins at about 11,600 BP.Paul Preston, "The Mesolithic Period", in Adkins, Adkins, & Leach, Handbook, pp. 23–25.

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