Astronomical dating of works of art predating sacramento
Brain performance is directly associated with a number of "higher" functions such as language and creative expression.
The consensus among most most paleontologists and paleoanthropologists, is that the human species (Homo) split away from gorillas in Africa about 8 million BCE, and from chimpanzees no later than 5 million BCE.
By 2 million years BCE more species of humans appeared, such as Homo erectus (brain capacity 800-1250 cc).
Dating and Chronology of Prehistoric Art A number of highly sophisticated techniques - such as radiometric testing, Uranium/Thorium dating and thermoluminescence - are now available to help establish the date of ancient artifacts from the Paleolithic era and later.