Size Comparison (image) Yale University Share Print E-Mail Caption The Titanoceratops rivaled the Triceratops in size, with an estimated weight of nearly 15,000 pounds and a massive eight-foot-long skull. Credit Nicholas Longrich/Yale University Usage Restrictions With credit. Share Print E-Mail 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.