Any DNA trace ?

Rpmdias:

Although I am not one of the authors, I think I should respond to your question anyway, from the perspective of a biologist: it is VERY unlikely, some would say even impossible, that there would be any traces of DNA or RNA on a 47 million year old fossil of this kind. The oldest ancient DNA that has been recovered (I think) are from neanderthal fossils, which are at most a few hundred thousand years old. Even then, it is mainly mitochondrial (mtDNA), rather than nuclear DNA, that has been preserved for that long time. Nucleic acids like DNA and RNA do simply not have that long life-spans of several million years, in spite of phantasy stories like "Jurrassic Park".

No competing interests declared.