No way. Too many volatile compounds that would have outgassed over the centuries. 50,000 year old droppings would be totally inert and recognized only by visual inspection. Change my mind.
We have the entire physical genome for Neanderthals.
It was recovered almost completely from fossilized teeth that are roughly the same age.
The poop is fossilized, just like the teeth.
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Bullcoprolite!
You forget that the oldest coprolite samples were buried under meters of similar deposits.
See my #38...
(Physical Chemist/Archæologist testifies...)
TXnMA