https://core.tdar.org/collection/69477/human-interactions-with-extinct-fauna
Category: Younger Dryas
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Younger Dryas “black mats” and the Rancholabrean termination in North America – PMC
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2373324/
“10,900 B.P. to 9,800 B.P. (radiocarbon years)….this layer or mat covers the Clovis-age landscape or surface on which the last remnants of the terminal Pleistocene megafauna are recorded”. -
Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling – PubMed
https://pubmed.ncbi.nlm.nih.gov/17901202/
Evidence of “Transition elements”, not evidence of an asteroid or meteor.
Against the Grain 