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+ 3.3 Million Years Ago
+ Earliest Known Stone Tools
+ The oldest known stone tools, dating back to about 3.3 million years ago, were discovered in Lomekwi, Kenya. These tools predate the genus *Homo* and are attributed to _Australopithecus_ species, indicating early tool-making abilities. Tools such as hammerstones, cores, and flakes were used to skin or pound animals and meat.
+ 3.6 Million Years Ago
+ Laetoli Footprints
+ In Laetoli, Tanzania, a set of hominin footprints was discovered, dating to approximately 3.6 million years ago. These footprints provide evidence of bipedal locomotion in early human ancestors. [Wikipedia](https://en.wikipedia.org/wiki/Laetoli?utm_source=chatgpt.com)
+ 1.76 Million Years Ago
+ Acheulean Handaxes
+ The Acheulean stone tool industry, characterized by large bifacial handaxes, emerged around 1.76 million years ago. These tools are associated with _Homo erectus_ and represent a significant advancement in tool-making techniques.
+ 500,000 Years Ago
+ Use of Pigments
+ Evidence from sites in Zambia and South Africa suggests that early humans used pigments, such as ochre, around 500,000 years ago. This use of colorant is considered an early form of symbolic behavior.
+ 300,000 Years Ago
+ Middle Stone Age Tools
+ Around 300,000 years ago, there was a technological revolution with the advent of Middle Stone Age tools. These included refined blades and projectile points, indicating advanced cognitive abilities and hunting strategies. [Smithsonian Magazine](https://www.smithsonianmag.com/science-nature/essential-timeline-understanding-evolution-homo-sapiens-180976807/?utm_source=chatgpt.com)
+ 100,000 Years Ago
+ Shell Beads as Jewelry
+ Perforated shell beads found in Morocco, dating to about 100,000 years ago, are among the earliest evidence of personal adornment. These beads suggest the development of symbolic thinking and communication.
+ 70,000 Years Ago
+ Blombos Cave Engravings
+ In Blombos Cave, South Africa, engraved ochre pieces and shell beads dating to approximately 70,000 years ago have been discovered. These artifacts indicate early artistic expression and cognitive complexity.
+ 40,000 Years Ago
+ Cave Paintings
+ Cave paintings, such as those in Chauvet Cave, France, dating back to around 40,000 years ago, showcase early humans' artistic abilities and their capacity for symbolic thought.
