Camelid sacrum in the shape of a canine
Prehistoric art around the globe
What is a camelid? What is a sacrum?
To allow us to state that the sacrum found at Tequixquiac was a definite proof of ancient man in the area the following things must be proven: (1) That the bone was actually a fossil belonging to an extinct species. We cannot doubt this since it has been affirmed by competent geologists and paleontologists. (2) That it was found in a fossiliferous deposit and that it had never been moved since it found its place there. This has not been proved in any convincing manner. (3) That the cuttings of the bone can actually be attributed to the hand of man and that it can never have occurred without human intervention. This has not been proved either. (4) That the carving was made while the species still existed and not in later times when the bone had already become fossilized.