Researchers have unearthed the graves of three Stone Age infants that may ultimately bear on the question of whether humans interbred with Neandertals. The rare find, from a 27,000-year-old site in Austria, includes two bodies that might be twins sheltered under a mammoth's shoulder blade.
The team discovered the skeletons in two separate burial pits: One uncovered last year contained two infants side by side--twins, apparently. A second pit containing a single body was found this year about a meter from the first pit. The twins had been protected from the elements by the mammoth bone and were very well preserved, says team member Christine Neugebauer-Maresch of the Prehistoric Commission of the Austrian Academy of Sciences in Vienna.