By Natural Philosopher Mike Prestwood
Timeline Story

Walking Upright: Sahelanthropus tchadensis

Walking Upright: Sahelanthropus tchadensis

When: 6.5 Million BCE
Absolute Years From Now: -6500000
Story Reference Date: 07/09/2021
260,000 Generations Ago

Brain Size: around 320 to 380 cm³ (speculative)
Brain to Body EQ: Unknown, but like similar to chimpanzees at 2.2 to 2.5 (humans=7.4 to 7.8)

Sahelanthropus tchadensis has two human anatomical traits: small canine teeth, and walking upright on two legs. We believe it walked on two legs because the large opening where the spinal cord exits out of the cranium from the brain is located further forward (on the underside of the cranium) than in apes or any other primate except humans.

The female human evolution.

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