Page 91 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

The helmetlike crest The back had a
was brightly colored to high, bony ridge.
impress potential mates.
Maiasaura

Corythosaurus Hadrosaurs

The fossils of young
Maiasaura show that like
all young animals, it had a About 49 ft (15 m) in
large head, eyes, and feet length, Shantungosaurus
until the rest of the body is the largest known
caught up. hadrosaur.

Shantungosaurus

Parasaurolophus

The jaw was studded
with more than 1,500
chewing teeth.

Hadrosaurus

Hadrosaurus
was the first
dinosaur to be The small front
feet did not bear
unearthed in North much weight.
America.

hadrosaur, such as Edmontosaurus, got as as Parasaurolophus, formed bony tubes
much nutrition as possible from every mouthful. that may have helped to amplify their calls,
Many hadrosaurs, including Lambeosaurus, making them sound like trumpeting elephants.
also had impressive crests on their heads that They lived in herds, calling to each other to
could have been used to attract mates or for stay in contact as they roamed the forests
temperature control. The crests of some, such of the Cretaceous world. 89

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