Cleon said:
Again, this is one of those things that makes it hard to take bigfoot seriously.
I wasn't being serious.
Even assuming the evidence for Bigfoot's existence is valid and substantial--which I don't concede--there's not a shred of reason to consider that he'd fall into any of the above genii.
In fact, gigantopithecus is probably out completely, as he probably wasn't bipedal. Australopithecines and ardepithecus were much smaller than human beings. Any attempt at classification at this point is purely guesswork and distracts from the need of Bigfootologists to get enough evidence to prove it even exists!
George Schaller has a problem with a specialized bamboo-eater making it over the Bering Strait.
Krantz thought
Gigantopithecus blacki (there was a smaller species as well) was bipedal based on the width of the jaw (wide to allow the passage of a vertical spinal column). It's now thought they were related to Orangutans, but there's really not enough in the way of fossils to establish the mode of locomotion one way or the other. The size seems to match, and it's possible they're an ancestor or a relative, if Sasquatches are not a remnant population.
Napier thought Sasquatches could have been descended from
A. robustus. There are other possible bipedal ancestors that have been discovered since then. We don't even knoe our own lineage for certain. The consensus (according to Chris Stringer) is that bipedalism was first, k-w a later adaptation in the Great Apes. The size could be an adaptation for cold.
As for them evolving from a smaller bipedal ancestor, why not? We did.
I don't know of any serious attempts at classification at this point. I personally hate the term "Bigfoot". It's journalese.
"Sasquatch" is a corruption of a Salish Indian name for them and is the preferred term in Canada. It's much more dignified, IMO.
Since there is no field of "Bigfootology", how are there "Bigfootologists"? I know of no one who's spending full time on this.