From Mario Petrinovic@21:1/5 to All on Wed Oct 13 23:19:52 2021
Some guy says that Sahelanthropus isn't a biped:
"Recent research in paleoanthropology also suggested that the African
ape Sahelanthropus could be ruled out as a biped, and that Orrorin
tugenensis, which originated in Kenya and lived 6.1 to 5.8 million years
ago, is the oldest pre-human in Africa, Böhme says." https://archaeologynewsnetwork.blogspot.com/2021/10/oldest-footprints-of-pre-humans.html
I am not sure about that, this is the only source that I have about this.
BTW, this article is full with some very fringe speculations, so I
don't know how much to believe it.