Mesolithic typochronology

                                                         Early Mesolithic
                                                         (Star Carr type)
                                                         9300-8300 BC


Microliths: Obliquely blunted points, isosceles triangles and trapezes.
Distribution: Northern England, Scotland, South Wales and Southern
England. Rare in Southern England.




                                                       Early Mesolithic
                                                       (Deepcar type)
                                                       8700-8200BC




Microliths: Obliquely blunted points, some with retouch on the
leading edge, partially-backed points; rarer triangles and trapezes.
Distribution: Northern England, North Wales and Southern England.



                                                      Early Mesolithic
                                                      Nab Head type)
                                                      8400-8100BC



Microliths: Obliquely blunted points, large variably lateralised
scalenes. Distribution: South Wales


                                                      Early Mesolithic
                                                      (Cramond type)
                                                      8400-8200BC


Microliths: Small obliquely blunted points; isosceles triangles;
basally retouched points, curve-backed pieces; trapezes.
Distribution: Eastern Scotland
                                                   Middle Mesolithic
                                                   (Variably lateralised
                                                   scalenes)
                                                   8200-7400BC


Microliths: Variably lateralised narrow scalenes, backed
bladelets, small obliquely blunted points, isosceles
triangles and crescents. Distribution: Scotland, Northern
England, West Midlands and North Wales.




                                                   Middle Mesolithic
                                                   (Honey Hill type)
                                                   8100-7300BC



Microliths: Obliquely blunted points, some with retouch on the
leading edge; inversely, invasively, basally retouched ‘Honey Hill’
points; lanceolates and variably lateralised scalenes. Distribution:
English Midlands.



                                                     Middle Mesolithic
                                                     (Horsham)
                                                     8000-6900BC


Microliths: Small obliquely blunted points; concave, basally
retouched, asymmetric ‘Horsham Points’; basally retouched,
symmetric ‘Tardenois Points’; rhomboids, rare isosceles triangles.
Distribution: Southern and southwestern England.
                                                  Late Mesolithic
                                                  (Left lateralised scalenes)
                                                  7100-4000BC

Microliths: Almost entirely left lateralised scalene triangles, backed
bladelets, crescents. Distribution: Found across Britain. Continues
unchanged to 4000BC in Scotland. Elsewhere Final Mesolithic types
appear.


                                                  Final Mesolithic
                                                  (Left lateral scalenes,
                                                  with 4-sided pieces
                                                  and micro-tranchets)
                                                  5200-4500BC

Microliths: Left lateralised scalenes, backed bladelets, crescents,
with occasional symmetric or asymmetric micro-tranchets (some
with inverse retouch at base) and/or four-sided pieces .
Distribution: Southern and Northern England and South Wales.


                                                    Final Mesolithic
                                                    (Rod microliths)
                                                    4200-3800BC


Microliths: Steeply retouched single or double straight-backed
bladelets (rods) only. Distribution: Northern England, where
distinguished by use of flint only. Probably also present in
Southern England.