Or Turtledove's "A Different Flesh" - https://en.wikipedia.org/wiki/A_Different_Flesh https://en.wikipedia.org/wiki/A_Different_Flesh > a collection of alterna

Or Turtledove's "A Different Flesh" - https://en.wikipedia.org/wiki/A_Different_Flesh https://en.wikipedia.org/wiki/A_Different_Flesh > a collection of alternate history short stories by American writer Harry Turtledove set in a world in which Homo erectus and various megafauna survived in the Americas instead of Native Americans or any other human cultures.