River Prehistory Project, and, more recently, by the Aucilla Research Institiute (https://www.aucillaresearchinstitute.org/), the Center for the Study of the First Americans (https://liberalarts.tamu.edu/csfa/research/#page), and Florida State University (https://sites.google.com/view/jessi-j-halligan/research-projects). Aucilla River Prehistory Project Starting in 1959, Dick Ohmes and other scuba divers began retrieving artifacts and Pleistocene animal bones bearing butcher marks from the lower reaches of the Aucilla River. A team led by archaeologist James M. Dunbar and paleontologist S. David Webb began a survey of Half-Mile Run in 1983. A former U.S. Navy Seal, Buddy Page, showed them a site where he had found elephant bones. A test pit yielded elephant bones, bone tools, and chips from tool making. Radiocarbon dating of organic material from the pit yielded dates from 13,000 to 11,700 years Before Present. The owners of the land surrounding Half-Mile Run, the Ladson family, granted permission to the team to access and camp along Half-Mile Run. Therefore, the site was named Page–Ladson. From 1983 until 1997 Dunbar (then with the Florida Bureau of Archaeological Research) and Webb (then with the Florida Museum of Natural History at University of Florida) led excavations, collectively termed the Aucilla River Prehistory Project (ARPP). Florida Museum of Natural History published an annual Aucilla River Times newsletter, as well as researchers reporting in scientific periodicals. As the project progressed, the team developed new methods of recording the stratigraphic placement of all material in an underwater environment. This excavation yielded eight lithic artifacts associated with mastodon butchering. This excavation dated the artifacts to approximately 14,400 BP, confirming that the Page–Ladson site was a Pre-Clovis site and the oldest site east of the Mississippi River. In 2012, archaeological excavation at Page–Ladson resumed, following Dunbar's discovery of the pre-Clovis component at the site, with the intention of finding the oldest dates for human remains and artifacts at the site. These excavations continued until 2014. This excavation yielded six lithic artifacts (bifaces and flakes) made from local coastal plain chert from layers dating before Clovis. This excavation dated the site to approximately 14,200 to 14,550 BP, reaffirming the earlier dating from the previous excavation. The 2012-2014 excavation was funded by the Center for the Study of First Americans and private grants; led by Jessi Halligan, James Dunbar, and Michael Waters; and included local support such as from Dunbar's Aucilla Research Institute and researchers from additional institutions such as Indiana University of Pennsylvania. Late Pleistocene animals and Paleoindians