"Ancient sequences were isolated from five Italian aurochs fossils previously dated at between 7,000 and 17,000 years old."
How long until DNA degrades to the point of being useless?
when their funding runs out
"How long until DNA degrades to the point of being useless?"
It seems to set in when they are re-elected to office.
I don't know, depends on the conditions, etc.
A 224 million year old bacteria live bacteria was found trapped in a salt crystal. So...
Maybe up to 60,000,000 years. Right now "they" are looking for DNA sequences in soft tissues remarkably preserved from dinosaurs.