Hadrosaurs, or ‘duck-billed’ dinosaurs as they’re more popularly known, were the most common type of dinosaur in North America during the Cretaceous period, but don’t tell them that. With unusual features such as crested heads and hundreds of cheek teeth, they’re anything but average. And they don’t look a day over 65 million.
Hadrosaurs lived during the late Cretaceous period from about 80 million to 65 million years ago. These herbivores often had crested heads and ranged in length from 20 to 40 feet long and 14 feet high. The ROM is known for its large and varied collection of hadrosaur specimens, including a Maiasaura (meaning ‘good mother lizard’).
Unlike many other herbivorous dinosaurs, hadrosaurs had no obvious protection from attack by carnivores. Some species probably relied on herding behaviour, good eyesight, sense of smell and large size to avoid predation.
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