I recently discovered a ancient dna controversy in European vs. American scientific strategies. Because of poor funding Americans are not dna testing the tarter from ancient teeth but Europe is.
Eoropean discoveries of ancient 'meals' has far out paced the US.
https://news.harvard.edu/gazette/story/2021/03/ancient-tooth-tarter-provides-glimpse-into-early-trade-and-menu-items/