Matthew Boulanger and R. Lee Lyman of the University of Missouri, Columbia, compiled radiocarbon-date databases for megafaunal remains and Paleoindian sites in the northeastern United States.
Notes on verification
Confirmed by original publication (Quaternary Science Reviews 2014), corroborated by Science magazine and ScienceDirect summaries of the study and authors' affiliations. [tier=silver indep_score=0.77 clusters=2 claim_tier=everyday]
Sources
- News - Was It Climate Change or the “Overkill Hypothesis”? - Archaeology Magazine (seed:history_and_archaeology)
- https://www.science.org/content/article/what-killed-great-beasts-north-america (corroboration)
- https://www.sciencedirect.com/topics/earth-and-planetary-sciences/megafauna (corroboration)