skeleton. Results showed that Tepexpan Man was 4,700 years old. She argues that contamination of the remains led to the obscured radiocarbon dates. Other critics have claimed that Tepexpan Man was an intrusion in that he was buried at a later date but dug into Pleistocene materials.

An analysis of Tepexpan Man that was published in the 1947 issue of The Science Newsletter claims that the individual was at least 40 at the time of death. This was determined by "united seams in the skull" (referring to sutures), and fused epiphyses in long