3.6 Bio tools used

What tools were used from 2.5mya and who used them

Oldowan era, simple, crude, only a few flakes removed, these were called a chopper used by Homo Habilis

What tools were used from 1.5mya and who used them

Acheulian era, typically tear drop shapes with lots of flakes removed, these were called a Hand Axe used by Homo Erectus

What tools were used from 250,000mya and who used them

Mousterian era, typically smaller than hand axe but sharper for more precise cutting, these were called a Levaillos Point, used by Homo Neanderthals

What tools were used from 40,000mya and who used them

Upper paleolithic era, these were long, thin, and sharp, these were called a Burin, used by Homo Sapiens.