Cutting edge training developed the human brain 80,000 years ago   PhysOrg - June 21, 2011
Advanced crafting of stone spearheads contributed to the development of new ways of human thinking and behaving.

2,500-Year-Old Preserved Human Brain Discovered   Live Science - March 26, 2011
A 2,500-year-old human skull uncovered in England was less of a surprise than what was in it: the brain. The discovery of the yellowish, crinkly, shrunken brain prompted questions about how such a fragile organ could have survived so long and how frequently this strange type of preservation occurs. Except for the brain, all of the skull's soft tissue was gone when the skull was pulled from a muddy Iron Age pit where the University of York was planning to expand its Heslington East campus.

54-million-year-old Skull Reveals Early Evolution Of Primate Brains   Science Daily - June 23, 2009
Primitive Primate's Brain Built   Live Science - June 23, 2009

Using a 54 million-year-old skull, researchers have constructed
the first-ever virtual model of a primitive primate brain.

  Oldest Fossil Brain Found in "Bizarre" Prehistoric Fish   National Geographic - March 3, 2009

  Oldest fossil brain found in Kansas   PhysOrg - March 2, 2009

Fossil Fish: Oldest Fossil Brain Find Is 'Really Bizarre'   Live Science - March 2, 2009