(Fox News) The severely elongated head of a preserved skeleton found in Peru’s Atacama Desert in 2003 is so unusual that it initially prompted people to suggest that the diminutive body was that of an extraterrestrial.

Since then, DNA testing confirmed that the remains — which measure about 6 inches (15 centimeters) long — belonged to a human fetus that researchers named Ata. But the scientists who conducted that investigation and published their findings in March have recently come under fire for their methods.