Scientists still debate the purpose of this dinosaur's iconic ... measure up to 10 feet long. Its head was ornamented with three horns, a short one above its mouth and two long ones above each ...
A team of geologists, paleontologists, and climate scientists with members from institutions in Mexico, the U.S., and Spain ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback