Embalming in ancient Egypt predated the pharaohs, an ancient mummy reveals. That would mean that the practice began at least 1,500 years earlier than once thought.

The mummy — an adult male curled on its left side in a fetal pose — is about 6,000 years old. It was previously thought to be naturally preserved by desert conditions at the site where it was buried. But the first-ever tests performed on the remains showed that the mummy was embalmed, making it the earliest known example of Egyptian mummification, researchers reported in a new study.

Further examination showed that the ancient embalmers used multiple ingredients to preserve the corpse, employing a similar recipe to the ones used 2,500 years later, when mummification in Egypt was at its peak.

More than a century ago, the mummy was discovered in Egypt. The exact location is unknown, though it is thought to have come from the ancient southern city of Gebelein on the Nile River, and represents a man who was about 20 to 30 years old when he died, the scientists reported. The mummy was acquired in 1901 by the Egyptian Museum in Turin, Italy, and dates to 3700 B.C. to 3500 B.C., according to the study.

Neither the dealer who sold the mummy nor the museum that displayed it ever applied any type of conservation treatment to the fragile remains, “hence it provides a unique opportunity for analysis,” the researchers wrote.

Previously, the scientists had analyzed fragments of mummy funeral wrappings that came from another location, dating to approximately the same period as the Turin mummy, and they found traces of compounds that hinted at embalming procedures. But the Turin mummy provided researchers with a rare chance to hunt for similar evidence on a preserved body, lead study author Jana Jones, a research fellow with the Department of Ancient History at Macquarie University in Sydney, Australia, said at a news briefing on Tuesday (Aug. 14).

The researchers sampled linen fragments from the mummy’s torso and right wrist, as well as from a woven basket that had been buried alongside the remains. Plant oils and animal fats permeated the ancient fabric, and the scientists pieced together an embalming “recipe” from the compounds that they found, which included sugar or gum, conifer resin, aromatic plant extracts, and antibacterial agents. These ingredients were in similar proportions to those found in balms used during the dynastic period, according to the study.

The Turin mummy is so old that it even predates written language (the earliest known evidence of writing dates to about 3400 B.C.). So, it’s likely that the embalming instructions were preserved verbally “and pᴀssed down through generations,” Jones said at the briefing.

Not only did the mummy confirm that prehistoric Egyptians embalmed their ᴅᴇᴀᴅ, but it also placed the procedure in more than one location: The funeral wrappings that the scientists described in 2014 were found about about 124 miles (200 kilometers) away from the spot where the Turin mummy was likely buried, Jones said.

In pushing back the beginnings of Egyptian embalming by more than a millennium, the new findings offer tantalizing clues about social behavior, religious beliefs and scientific expertise in the region’s prehistoric communities, Jones said.

“They had a well-developed belief in the afterlife — they wanted their bodies to be preserved,” she explained. “And they had a knowledge of the science that went into preserving the body.”

The findings were published online Wednesday (Aug. 15) in the Journal of Archaeological Science.