Homo erectus, 1.8 million years ago, is most likely the ancestor of homo __________. The brain case for homo erectus is __________. June 11, 2018 Homo erectus, 1.8 million years ago, is most likely the ancestor of homo __________. The brain case for homo erectus is __________. Answer: sapiens, 900 cc Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+