More than 1,000 bones from Kenya’s FwJj 80 site show early humans butchered animals, cracked long bones for marrow and carried nutrient-rich limbs away from kill sites about 1.6 million years ago.
Cut marks and hammerstone impact marks were common, especially on meat-rich leg shafts, while carnivore tooth marks were relatively rare, indicating early Homo often reached carcasses before predators stripped them.
Leg bones far outnumbered skulls, ribs and vertebrae, a pattern researchers say points to selective transport of the best cuts to safer places for processing rather than eating animals where they died.
The PNAS study places those behaviors in Koobi Fora’s KBS Member and finds they match patterns seen in younger local deposits and older East African sites, suggesting a stable but flexible foraging strategy.
Reliable access to meat and marrow may have helped support larger brains and more organized group behavior, adding evidence that animal foods were central to early human evolution.
If strategic meat-eating fueled our brain's growth, what does this ancient diet mean for human health today?
How did early humans outsmart giant predators, revealing complex social strategies millions of years before civilization?
Strategic Meat Acquisition by Early Homo at Koobi Fora (1.6 Ma): Implications for Human Cognitive and Social Development
Overview
A groundbreaking study published in the Proceedings of the National Academy of Sciences reveals that early Homo species in Koobi Fora, Kenya, were systematically acquiring, butchering, and transporting meat as far back as 1.6 million years ago. Fossil bones with clear cut marks show that these early humans were not just opportunistic scavengers, but engaged in planned strategies to process and move valuable meat portions. This discovery pushes back the timeline for complex meat acquisition and challenges previous assumptions about early human behavior, highlighting a significant leap in cognitive and social development.