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Very interesting findings you report here. I wonder if a similar methodology could be employed to examine megafaunal extinctions in other parts of the world (e.g. South America, Australasia, and Afro-Eurasia)?
Thanks for your message and interest in the article. Yes, this method could be used for any region with sufficient enough radiocarbon data. Unfortunately, for some places (e.g., South America) its my understanding that the radiocarbon data remains limited. But as these records continue to grow we will be able to explore more the use of such methods. Taking this approach beyond North America is definitely something that we are considering.