Sahelanthropus tchadensis was a species of ape which roamed the area of Chad in northern Central Africa between 7-6 million years ago, during the late Miocene Epoch. When initially discovered and described, Sahelanthropus was interpreted as a possible human ancestor due to the position of its skull’s foramen magnum (an opening where it connects with the spine), which suggested a bipedal posture. However, later analysis of its femur cast doubt on whether the animal would have been a habitual biped like humans and most other hominins.
For my portrayal here, I went with an “arboreal biped” method of locomotion for Sahelanthropus, meaning it would travel through the treetops on its hind legs. I like to think that’s how the very first hominins got around prior to their descent to the ground.