Upper jaw of Australopithecus deyiremeda
Credit: Yohannes Haile-Selassie / copyright Cleveland Museum of Natural History
A great deal of religion, especially the Abrahamic religions, depends on humans seeing themselves as a special creation. The entire thrust of the Genesis origin myth, for example, is an attempt to explain why human beings are different to, and above, the rest of the animals. It went without saying to the people who invented this myth that this was simply a matter of obvious fact. It probably never even occurred to them that this was merely an assumption, just as it doesn't seem to occur to some people today.
Humans are different and special, so there must be a reason. That belief almost certainly doesn't come from the myth; the myth was very probably invented to explain the 'fact'.