In Southern California there are two aboriginal language groups: the Hokan and the Uto-Aztecan–The Hokan phylum could be found in various parts of California–Some people think that Hokan was one of the original language groups in California–It is thought that as other language groups migrated into California they pushed the Hokan speakers aside–The Uto-Aztecan groups in Southern California is the Takic languages–It is thought that they migrated into Southern California and displaced the Hokan groups, the Yumans–However, mitochondrial DNA studies show little difference between the Takic speakers and the Yuman speaking groups 
RICHARD PETTINGER HELLER 