[1] He specializes in geoarchaeology,[1] and has applied this method to the investigation of Clovis and later Paleo-Indian, and possible pre-Clovis occupation sites.
Waters began excavations in the Buttermilk Creek Complex at the Debra L. Friedkin Paleo-Indian site in Texas in 2006.
[4] The artifacts include chipping debris and a mobile tool kit with 56 pieces such as blades, scrapers and choppers.
The Clovis artifac ts were localized at the base of the sequence with Folsom, Late Paleo-Indian and Archaic artifacts in superimposing deposits.
Waters and the North Star team reanalyzed the rib using modern technologies such as advanced AMS radiocarbon dating, high resolution X-ray CT imaging, and DNA and protein sequencing.
[7] In 2007, Waters published a paper with Thomas Stafford re-dating many of the key Clovis sites in North America to between 13,000 and 12,700 years ago.