This is a pretty interesting story. There have been several sites that seem to predate Clovis, but there has been considerable resistance to their acceptance. The Manis Mastodon seems to be a pretty solid case based on many lines of evidence. Really, Clovis-first bites the dust. And for the folks saying “well, it’s reeeealy early Clovis” that seems to be stretching the meaning of “Clovis” so far it’s meaningless.
Out of Ice and Time 