Studies of the horns, spikes, plates and clubs of dinosaurs could help settle a long-standing debate over their function ...

Triceratops’ enormous head might have been all it took to send other dinosaurs running—some recovered skulls measure up to 10 feet long. Its head was ornamented with three horns, a short one ...

This horned dinosaur has asymmetric horns in the middle ... The researchers believe such a diversity of similar animals living together at one time suggests that they underwent rapid evolution.

Darla Zelenitsky of the University of Calgary co-authored the study on the Duonychus tsogtbaatari, a medium-sized member of a ...