Holliday and Meltzer's 2010 study found no archaeological evidence of a demographic collapse among post-Clovis human populations in North America.
Sources
- The 12.9-ka ET Impact Hypothesis and North American Paleoindians (jstor.org)
- https://www.journals.uchicago.edu/doi/full/10.1086/656015 (journals.uchicago.edu)
- https://blog.smu.edu/research/2010/09/29/no-evidence-for-ancient-comet-devastating-clovis-says-smu-archaeologists-research/ (blog.smu.edu)
- https://www.geo.arizona.edu/sites/www.geo.arizona.edu/files/pictures/JQS2014--Holliday%20et%20al.%20FULL.pdf (geo.arizona.edu)