'The archaeological record is littered with feces, a potential goldmine for insights into ancient health and diet, parasite evolution, and the ecology and evolution of the microbiome. The main problem for researchers is determining whose feces is under examination. '
Here is the study published in @PeerJ.
'CoproID predicts the source of coprolites and paleofeces using microbiome composition and host DNA content'
https://peerj.com/articles/9001/ 
But does it have pictures of poop, I hear you ask.
Well, yes.
The image in the news article (start of this thread) appears to be showing rather fresh piles of poop hahahaha. I guess the search for stock photos of paleofeces or coprolites did not return a lot of results.
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