History was made recently after researchers discovered that an Egyptian mummy, who, for decades, was believed to be a male, was actually a pregnant female. The findings, which were published in a report last month in The Journal of Archaeological Science, mark the "only known case of an embalmed pregnant individual" in the history of the world. Through their examinations, scientists were able to determine that the woman was between 20 and 30 years old when she died and the fetus was approximately 26 to 30 weeks old, according to the report. This particular mummy had been found in the royal tombs of Thebes, Upper Egypt, the report stated. At the time, it was "carefully mummified, wrapped in fabrics, and equipped with a rich set of amulets," per the report. In 1826, the mummy was donated to the University of Warsaw and later housed at the National Museum in Warsaw. Centuries later, radiological exams were conducted, leading researchers to believe the mummy was male. Ejsmond told the Times that in recent months his team had been examining the mummy's body again when they discovered it was not a male, as initially believed. That strange sighting in the pelvic area turned out to be a tiny leg of a fetus. Scientists then went on to conduct additional computer scans and x-rays to determine the mummy and fetus' approximate age at their time of death, per the outlet.