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What effect, if any, did the hypothesized meteorite impact event of 12,9 kya have on Clovis (read humans already in the Americas)? Doesn't Clovis fade out about the same time? Did this event kill or weaken the megafauna enough to drive them to extinction? Twalls (talk) 08:08, 12 December 2007 (UTC)
Evidently not much. Megafauna extinctions started before that and ended thousands of years after it. Additionally, Clovis lasted another century afterward.--Windustsearch (talk) 01:33, 9 January 2009 (UTC)
According to this study, the impact event may have caused an immediate population decline as well as behavioral and cultural changes. Twalls (talk) 22:21, 12 December 2007 (UTC)