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Lambeosaurus

By Bob Strauss, About.com

Lambeosaurus (Wikimedia Commons)

Name:

Lambeosaurus (Greek for "Lambe's lizard"); pronounced LAM-oh-SORE-us

Habitat:

Woodlands of North America

Historical Period:

Late Cretaceous (75 million years ago)

Size and Weight:

About 30 feet long and 4 tons

Diet:

Plants

Distinguishing Characteristics:

Large, hollow, hatchet-shaped crest on head

About Lambeosaurus:

Although Lambeosaurus had much in common with a lamb--it was a relatively gentle, plant-eating dinosaur that minded its own business--this hadrosaur was actually named after the famous paleontologist Lawrence M. Lambe, who began studying its remains at the turn of the 19th century.

Lambeosaurus shared the same territory and historical period with a closely related duck-billed dinosaur, Corythosaurus. Both of these herbivores had large, hollow crests on top of their heads, which they likely used to signal other members of the herd and alert them to the presence of carnivores.

Like Corythosaurus, the skeleton of Lambeosaurus shows that this dinosaur grazed pretty much like modern herbivores, walking on all fours and keeping its head close to the ground, the better to nibble on vegetation. However, it's important not to take this analogy too far: for instance, in the late Cretaceous, modern grass had yet to evolve!

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