Scientists still debate the purpose of this dinosaur's iconic horns and spiky head plate. Find out what we’ve learned about how Triceratops lived and why it went extinct. Triceratops’ enormous ...

A 2014 study found that it wasn’t until much later in the twilight years of this lineage that this ‘fake’ horn grew longer while its beak shrank. Triceratops‘ skull is its most striking ...