Figure 1

The Late Quaternary range of the short-faced bear, Arctodus simus, in California. Locations of Late Pleistocene (approximately Rancholabrean) Arctodus simus occurrences: white circles indicate presence at a site of indirectly estimated age75,76,77,78,79 and blue circles indicate directly radiocarbon dated specimens27,59. Inset map features the California Channel Islands with coastlines of both the present day and ~ 20,000 years before present6. Yellow circles depict pertinent archaeological sites. Map produced using the statistical software R v3.6.2 and Adobe Illustrator.