hadrosaur

Everyday

A hadrosaur is a duck-billed dinosaur: a large plant-eating dinosaur with a wide, flat mouth like a duck's beak. tree →

In the lessons

In science and history lessons hadrosaurs lived in the Late Cretaceous, about 100 to 66 million years ago, in North America, Asia and Europe. Some, like Parasaurolophus, had a hollow crest on their head that may have made honking sounds. They had hundreds of teeth for grinding plants and lived in herds. Scientists found nests and babies of the hadrosaur Maiasaura in Montana, USA.

Examples

• A hadrosaur is a duck-billed dinosaur. tree →
• Parasaurolophus was a hadrosaur with a long crest on its head. tree →
• Hadrosaurs had hundreds of teeth for chewing plants. tree →
• The museum has a complete hadrosaur skeleton. tree →
• Maiasaura hadrosaurs looked after their babies in nests. tree →
• Hadrosaurs walked on two or four legs. tree →

Note

Countable. Say «HAD-ro-sore». «-saur» means lizard in Greek, as in dinosaur. Hadrosaurs were plant-eaters, not meat-eaters.