Bout-coupé
In archaeology, a bout-coupé is a type of handaxe that constituted part of the Neanderthal Mousterian industry of the Middle Palaeolithic. The handaxes are bifacially-worked and in the shape of a rounded triangle. They are only found in Britain in the Marine Isotope Stage 3 (MIS 3) interglacial between 59,000 and 41,000 years BP, and are therefore considered a unique diagnostic variant. References

External links
 Neanderthal handaxe, Hantsweb

Archaeological artefact types
Axes
Mousterian
Archaeological discoveries in the United Kingdom