Abstract
Subsistence studies conducted on regional archaeological deposits indicate that in the Delta, as in the rest of the Central Valley, there is a decrease in foraging efficiency during the Late Period. A recently excavated site, CA-SAC-47, provides direct evidence of subsistence strategies in the form of faunal and plant remains. This faunal assemblage is compared to direct evidence of subsistence from Delta sites SAC-42, SAC-43, SAC-65, SAc-145, and SAC-329. the results and implication of this direct evidence are used to address site variability and resource selectivity.