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 ...

Kids of all ages (and I include adults here) are fascinated by dinosaurs that break records for the biggest, the longest, the scariest or the fastest.

The largest and the smallest: dinosaurs reached an amazing range in size through the Mesozoic Era. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...