MyThe Oldest DNA Ever Sequenced
The current record for the oldest DNA ever sequenced is roughly 2 million years old — recovered not from a single skeleton, but from ancient sediment in Greenland that preserved genetic traces of an entire lost ecosystem. It's a useful reminder of just how deep ancient-DNA science can reach, far beyond the roughly 10,000-year window covered by consumer ancestry tests like MyHeritage's Ancient Origins.
| Current record | ~2 million years old — DNA fragments preserved in sediment at the Kap København Formation, Greenland |
|---|---|
| Type of sample | Environmental (sediment) DNA from an entire ancient ecosystem, not a single organism's remains |
| What it revealed | Traces of 135+ species, including mastodons, reindeer, geese, and horseshoe crabs, describing an Arctic forest ecosystem 2 million years ago |
| Oldest single-organism DNA | A roughly 1.2-million-year-old Siberian mammoth |
| Oldest hominin (human-lineage) DNA | Roughly 430,000 years old, from the Sima de los Huesos cave site in Spain |
| Theoretical outer limit | Around 2.6 million years — roughly the age of permafrost formations themselves, under ideal preservation conditions |
How a 2-million-year-old ecosystem was recovered from mud
The current record holder didn't come from a skeleton at all. Researchers extracted microscopic DNA fragments preserved in sediment at Kap København in northern Greenland, a site that was once a lush Arctic river-mouth landscape roughly 2 million years ago, long before it became permafrost. Because DNA had been trapped and preserved within mineral particles in the sediment for millions of years, scientists were able to piece together fragments from an entire ecosystem — plants, insects, and animals — rather than reconstructing the genome of just one individual. The published results, appearing in Nature in December 2022, identified genetic traces from more than 135 different plant and animal groups, offering a genetic snapshot of an ancient environment rather than a single ancient creature.
The record before Greenland: a frozen mammoth
Before the Greenland sediment discovery, the record for oldest DNA from an actual organism belonged to a Siberian mammoth specimen, estimated at roughly 1.2 million years old — itself a huge leap beyond the previous record, a roughly 750,000-year-old ancient horse genome recovered from Yukon permafrost. Each of these discoveries pushed back what scientists believed was even theoretically possible, since DNA was long assumed to degrade too quickly to survive on million-year timescales outside of exceptional cold, dry, or otherwise stable preservation conditions.
The oldest DNA from a human relative
Separately from these record-setting animal and environmental samples, the oldest DNA recovered from a member of the human evolutionary lineage comes from roughly 430,000-year-old remains found at the Sima de los Huesos ("Pit of Bones") cave site in Spain — belonging to an early population ancestral to, or closely related to, Neanderthals. That's dramatically older than any anatomically modern human DNA recovered to date, and it illustrates just how much deeper hominin-lineage genetics reaches than the more recent history most ancestry-testing companies focus on.
Why consumer tests only go back about 10,000 years
Products like MyHeritage's Ancient Origins compare your DNA to archaeological samples spanning roughly the last 10,000 years — a tiny fraction of the multi-million-year record described above. That's a deliberate scope decision, not a technical ceiling: the reference populations used for consumer ancestry comparisons are drawn from anatomically modern human remains from the period when recognizably distinct regional populations were forming, which is the timeframe genetically and historically relevant to a person's ancestry today. Million-year-old mammoth or sediment DNA is scientifically extraordinary, but it isn't useful for tracing a living person's ancestry the way a 3,000-year-old human sample is.
Will scientists ever recover older DNA than 2 million years?
It's possible but faces steep physical limits — most researchers estimate a theoretical outer limit around 2.6 million years, roughly tied to how long permafrost and similarly stable, cold environments have existed in a form that could preserve DNA at all. Finding a well-preserved sample near or beyond that age would require ideal, rare preservation conditions.
Is the oldest DNA record for humans different from the oldest DNA record overall?
Yes — the overall oldest-DNA record (currently ~2 million years) comes from non-human sources like Arctic sediment and a Siberian mammoth. The oldest DNA specifically from the human evolutionary lineage is much younger, at roughly 430,000 years, from a cave site in Spain.