The Science Newsletter described Tepexpan man in its 1947 edition. It described Tepexpan Man as having "a high-domed, thin-walled skull" which contained "a brain the same size as those of present-day Indians." The writers described a "solidly built" jawline and "prominent" brow ridges, as well as a "sharply prominent chin" which would separate him from earlier Neanderthals. Tepexpan Man only had three teeth left in his upper jaw. In his lower jaw, all of the molars had disappeared before his death. This was evidenced by the alveolar sockets being healed and smoothed over in the mandible. What was left on the mandible included incisors, "eye-teeth," and premolars that were worn but still in decent condition.