Van sokkal hihetőbb magyarázat is, én ere tippelnék:

"The second possibility is that Ata, the size of a 22-week-old fetus, suffered from a severe form of a rare rapid aging disease, progeria, and died in the womb or after premature birth."

http://news.sciencemag.org/sciencenow/2013/05/bizarre-6-inch-skeleton-shown-to.html