This is a news story, published by Phys Org, that relates primarily to the Natural History Museum of Utah news.
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Researchers at the Natural History Museum of Utah are using new techniques to extract microscopic plant residues preserved in cracks and crevices of bedrock metates to learn more about the people who put them there.
The researchers are working with NHMU's Curator of Archaeology Lisbeth Louderback to recover plant residues from metates across western North America .
Researchers were able to narrow down the plant family of many granules.
Some could even be identified down to the genus level.
Root vegetables, for example, will break down faster than seeds or grains.
This new method of recovering starch granules provides researchers another way to study the role of plants in human diets.
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