Hominin Skull Casts (IMAGE) University of the Witwatersrand Caption These are Hominin skull casts used to measure the supply of blood to the brain. Credit Photo credit: Roger Seymour Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.