In the 1930s, a girl exploring the Copper Canyon region of Mexico stumbled upon an adult-sized skeleton in an abandoned mine. Next to the skeleton was a mound of dirt under which was buried a child-size skeleton.
Once unearthed, the skull of the smaller skeleton proved to be unusual in that “the volume of the interior of the starchild skull is 1,600 cubic centimeters, which is 200 cm³ larger than the average adult’s brain, and 400 cm³ larger than an adult of the same approximate size.”
The eye sockets are shallower than normal, there are no discernable sinuses, and “the back of the skull is flattened, but not by artificial means,” according to Wikipedia.
The skull is now in the possession of Lloyd Pye, who founded The Starchild Project in order to study and analyze the skull. According to Pye, the skull features the following anomalous characteristics:
– The skull’s bone is about half as thick as normal human bone.
– The bone weighs about half as much as normal human bone.
– The bone is substantially stronger than any known bone on planet Earth, with a mineral profile more like dental enamel than bone.
– The skull is morphologically unique, and does not match the physical profile of any known human deformity.
– The bone of the skull contains an as yet unidentified reddish residue that had never been seen before in bone (this is not desiccated bone marrow).
– The bone of the skull contains microscopic fibers that have never been seen before in the bone of any animal.
The skull was carbon dated at around 900 years old and early DNA tests found mitochondrial DNA from a human mother but “no nuclear DNA could be recovered using human-only primers, which strongly indicates that the skull’s father was something other than a typical human,” according to Pye.