The relatively few well-documented Clovis sites with intact stratigraphy and clear associations between artifacts and other evidence have been disproportionately important for understanding Clovis subsistence and behavior.

The kill sites — places where Clovis points are found in association with the bones of large animals — have been particularly significant.

Sites like the Naco and Lehner sites in Arizona, the Murray Springs site also in Arizona, and numerous sites on the Great Plains have documented Clovis hunters killing mammoths, mastodons, horses, and other Pleistocene megafauna.

These sites provide direct evidence of one of the most important activities of Clovis life: the hunting of very large animals.

The association between Clovis technology and megafauna hunting has been central to interpretations of the Clovis people’s role in the extinction of Pleistocene megafauna at the end of the Ice Age.