Page 92 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

Cool crests

Corythosaurus means Parasaurolophus
“helmet lizard,” referring had the longest
to its large, helmetlike crest.
crest of any known
dinosaur—about
A spectacular hollow
crest extended from its 3 ft (1 m)
Corythosaurus
nose and may have been long.
used like a trumpet.

This hunter’s crest
extended for most of
the length of its snout. Two distinctive
flat crests extended
along the top of
the snout.

Monolophosaurus Parasaurolophus Dilophosaurus

The skulls of many dinosaurs were colorful skin. Some of the most spectacular
equipped with bony features that crests belonged to hadrosaurs, such as
may have supported impressive crests. Corythosaurus, Olorotitan, and especially
The bones were probably extended by extra Parasaurolophus. The bones of these crests
structures made of tough keratin, like the were hollow—possibly to make their calls
90 horns of cattle or sheep, or covered by louder, since the chambers in the crests of
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