Sources: PNAS , 
quote: Oh, that's right, this leaf wax was actually under the ground for "2 million years". So what they mean is these leaves were buried very quickly by some extinction event, you know, one of those events where billions of dead things were buried by water, and covered by rocks all over the planet.
quote: Historical records from antiquity, as well as tribal legends from all over the planet do actually mention one such event like that, but of course I doubt they'd be interested in knowing this, especially as these leaves were almost certainly buried in that event
quote: Do you know what I think? I think if they bothered to carbon 14 date the stuff they'd get a result, and it wouldn't be 2 million years old.
quote: You know what else I think? I think if they look around in those sediments they might actually find some seeds with DNA in them.