MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Triceratops. Computer enhanced image of the fossilised skeleton of a Triceratops dinosaur. Triceratops ("three-horned face") was a herbivore that grew up to 9 metres (m) long and weighed up to 6 tonnes; their skulls were up to 2m long. This powerful and heavily-built dinosaur was a formidable opponent for any predator. They defended themselves with horns, whilst a bony frill protected their neck. The frill had slots where large muscles for powering the creature's beak-like jaw were attached. Triceratops evolved only a few million years before dinosaurs became extinct at the end of the Cretaceous period (about 65 million years ago).
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