This page has six of the great plant-eaters of the Cretaceous, each with its own answer to the problem of being hunted. Move your pointer and one will follow you. Choose a different one at the bottom, and tap the notes to open them.
01 · HeadOne of the biggest heads
Its skull could be 2.5 metres long: among the largest of any land animal.
02 · HornsHorns a metre long
The brow horns grew to about a metre, and changed shape as the animal grew up.
03 · FightsIt fought T. rex, and each other
Some frills have healed Tyrannosaurus bites. Other wounds match the horns of another Triceratops.
04 · TeethEight hundred teeth
Its jaws held stacks of teeth that sliced like shears, with new ones always growing in.
05 · LastOne of the last
It was among the very last dinosaurs alive before the asteroid.
06 · CommonVery common
In the rocks of Montana it is the dinosaur found most often.
Meet them all
Six plant-eaters
Triceratops
Three-horned face · try-SERRA-tops
Size
About 9m long; 6 to 10 tonnes
Lived
About 68 to 66 million years ago
Found in
Western North America
A massive plant-eater with a huge head, two long horns over its eyes, a shorter one on its nose and a solid bony frill.
Real fossils, skeletons and museum models of the animals on this page. Tap one to see it bigger.
Triceratops
Ankylosaurus
Parasaurolophus
Iguanodon
Pachycephalosaurus
Argentinosaurus
Photos are from Wikimedia Commons and are used under free licences. They have been resized, and cropped where they appear in link previews. Open a photo to see who took it.
Horns, clubs and herds
Most dinosaurs ate plants. Horns, armour, size, speed and living in a crowd were all ways of not being eaten in turn.