Recent archaeological research within the American west, especially the Great Basin (e.g., Graf and Schmitt 2007), has perpetuated the notion of decreased residential mobility accompanied by increased diet breadth of hunter-gatherer groups during the Early Holocene. The earliest occupations at North Creek Shelter (NCS), a multicomponent site in south-central Utah, date to this time, specifically the Paleoarchaic (~10,000-9000 BP) and Early Archaic (~9000-7500 BP) periods. The zooarchaeological data from these levels were analyzed to determine whether Paleoarchaic occupations on the Colorado Plateau possessed greater residential mobility and narrower diet breadth than those of the Early Archaic, as they do in the Great Basin. However, upon examination of the NCS data, neither seems to be the case, or at least not to the dramatic degree observed to the west, as settlement and subsistence strategies remain fairly constant throughout the Early Holocene.

Early human activity in the arid west has been of interest for many researchers over the last century. However, relatively little is known about Paleoarchaic occupants of the Colorado Plateau and Great Basin because stratified Paleoarchaic sites in these regions are rare. Linked with the climatic Late Pleistocene/Early Holocene transition, the Paleoarchaic to Early Archaic transition has also captured interest in the central Great Basin with recent data coming out of Bonneville Estates Rockshelter—a site containing Pre-Archaic and Early Archaic components in eastern Nevada. These new data provide a model for testing differences in the chipped stone assemblage inferring changes in residential mobility at a new Paleoarchaic site on the Northern Colorado Plateau. Recently excavated, North Creek Shelter (42GA5863) is the only known stratified Paleoarchaic site on the Colorado Plateau for which we have data. Located in south-central Utah, this site was occupied during both the Paleoarchaic (~10,000-9,000 rcybp) and Early Archaic (~9,000-8,000 rcybp) time periods. Differences in the chipped stone assemblage inferring residential mobility between these time periods will be evaluated using Ted Goebel's (2007) model from Bonneville Estates Rockshelter. Based upon Bonneville Estates Rockshelter's lithic assemblage, Goebel inferred that the Pre-Archaic occupants exhibited higher levels of residential mobility than subsequent Early Archaic occupants. A similar tendency was expected for the Paleoarchaic occupants of North Creek Shelter; however, it appears that there is little difference between the North Creek Shelter Paleoarchaic and Early Archaic chipped stone assemblages inferring differences in residential mobility. What little difference there is may be the result of multiple factors, but if it is the result of residential mobility, then the data suggest that North Creek Shelter Paleoarchaic occupants were only slightly more mobile than the Early Archaic occupants.