Science Magazine – March 31, 2023 issue: A new analysis shows that Great Plains tribes acquired horses much earlier than some historians had thought, consistent with Indigenous descriptions of a long and enduring partnership with the horse. This petroglyph, from the Tolar site in southern Wyoming, probably dates from soon after the modern horse became widespread in North America in the early 17th century. 

Horse nations: Animal began transforming Native American life startlingly early

Sweeping new study based on archaeological evidence, chemical isotope analysis, and ancient DNA “totally changes the game”

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