Interactive Dinosaurs

The triceratops that follows you

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.

More about the triceratops

Ankylosaurus

Fused lizard · an-KIE-loh-SORE-us

Size
About 6 to 8m long; 5 to 8 tonnes
Lived
About 68 to 66 million years ago
Found in
Western North America

A wide, low dinosaur armoured with bony plates from head to tail, with a heavy club on the end of its tail.

More about the ankylosaurus

Parasaurolophus

Near crested lizard · PA-ra-saw-ROL-off-us

Size
About 9.5m long; 2.5 tonnes
Lived
About 76 to 73 million years ago
Found in
Alberta, Canada; New Mexico and Utah, USA

A duck-billed dinosaur with a long, hollow, curved crest sweeping back from its head.

More about the parasaurolophus

Iguanodon

Iguana tooth · ig-WAH-no-don

Size
About 10m long; 3 to 5 tonnes
Lived
About 126 to 122 million years ago
Found in
Belgium; also England, Germany and Spain

A large plant-eater with a horse-like head, a toothless beak and a sharp spike on each thumb.

More about the iguanodon

Pachycephalosaurus

Thick-headed lizard · PAK-ee-SEF-ah-lo-SORE-us

Size
About 4.5m long; 450kg
Lived
About 70 to 66 million years ago
Found in
Western North America

A two-legged plant-eater with a domed skull ringed by bony knobs and short spikes.

More about the pachycephalosaurus

Argentinosaurus

Argentine lizard · AR-jen-TEEN-oh-SORE-us

Size
Perhaps 30 to 35m long; 60 to 80 tonnes
Lived
About 96 to 92 million years ago
Found in
Patagonia, Argentina

A colossal long-neck: one of the largest animals ever to walk on land.

More about the argentinosaurus

Good to know

Six things about the Cretaceous

When

145 to 66 million years ago

The Cretaceous is the last and longest period of the age of dinosaurs.

Flowers

The first flowers

Flowering plants appeared and spread, along with bees and butterflies.

Seas

High seas

Sea levels were very high. Shallow seas covered much of Europe and split North America in two.

Chalk

It is named after chalk

Creta is Latin for chalk. The white cliffs of Dover formed on a Cretaceous sea floor.

Many

More kinds than ever

There were more kinds of dinosaur in the Cretaceous than at any other time.

End

It ended with a bang

An asteroid about ten kilometres wide struck what is now Mexico, 66 million years ago.

The Cretaceous: 2 more places

Where next?

Another period Dinosaurs by type

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.

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