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