Other subdivisions reflect the evolution of life; the Archean and Proterozoic are both eons, the Palaeozoic, Mesozoic and Cenozoic are eras of the Phanerozoic eon.The three million year Quaternary period, the time of recognizable humans, is too small to be visible at this scale.
For example, the boundary between the Cretaceous period and the Paleogene period is defined by the Cretaceous–Paleogene extinction event, which marked the demise of the non-avian dinosaurs and many other groups of life.
Radiocarbon dating yields an age for the remains to be between 8,977-9,603 years old. INFO KUMEYAAY RESEARCH and CALIFORNIA INDIAN RESEARCH portals.
The archaeological site from where the remains were removed is identified as CA-SDI-4669 aka W-12-76. See our KUMEYAAY GUIDE for a list of the Kumeyaay reservations.
The Kumeyaay Cultural Repatriation Committee (KCRC) was created in 1997 to aid the San Diego area Kumeyaay bands in the repatriation of their ancestors' human remains, tribal artifacts and cultural objects of a patrimony heritage.
SAN DIEGO (CN) - Twelve Indian tribes, known as the Kumeyaay, sued The University of California in Federal Court, seeking repatriation of 9,000-year-old human remains excavated from the school's San Diego campus in 1976The Kumeyaay Cultural Repatriation Committee, which consists of 12 tribes in San Diego County, claims the University violated Native American Graves Protection and Repatriation Act by keeping the two human remains.