[RightWingAtheist]

More precisely, there are no mammal fossils more than 200 million years old (you can go up to 280 million years, if you consider theraspids as being mammals). Purgatorius, the earliest "true" primate, dates from the late Cretaceous, between 70 and 64 million years ago.

[<1/1,000,000th%]

Thank you for that clarification.