Final answer:
The literature does not offer an exact count of megafauna kill sites but provides analyses on human impact on megafauna extinctions.
Step-by-step explanation:
The question of how many megafauna kill sites have been found is deeply rooted in the archaeological and paleontological fields, with researchers examining sites around the world for evidence of human hunting practices leading to megafauna extinctions. Current research, such as the studies by Alroy (2001) and Sandom et al. (2014), does not provide an exact number of megafauna kill sites. Instead, these studies discuss the involvement of humans in megafaunal extinctions and analyze patterns across various locations. Accordingly, the available literature focuses more on the ecological and evolutionary impact of humans on megafauna rather than a quantified tally of kill sites. The overall conclusion drawn from recent work, such as that of Sandom et al. (2014), suggests a clear correlation between the arrival of human hunters and the extinction of megafauna in about one-third of the cases studied.