https://en.wikipedia.org/wiki/Bison#Evolution_and_genetic_hi...
Though "invasive" is usually not used when they showed up ~150,000 years ago, and appear to have evolved through a couple distinct species since then.
https://en.wikipedia.org/wiki/Bison#Evolution_and_genetic_hi...
Though "invasive" is usually not used when they showed up ~150,000 years ago, and appear to have evolved through a couple distinct species since then.