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Happy Hadrosaurs! Dinosaurs

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Happy Hadrosaurs!
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Reading Level

	edHelper's suggested reading level:	grades 3 to 5
	Flesch-Kincaid grade level:	4.04

Vocabulary

	challenging words:		duck-billed, grapefruit-sized, hadrosaur, hadrosaurs, knobbly, snorkel, bony, handy, successful, good-looking, nasal, interesting, mothers, foghorn, bunch, hollow
	content words:		North America, Worst Crest Award, Best Crest Award

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Happy Hadrosaurs! By Colleen Messina

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¹     Hadrosaurs may have been happy dinosaurs. Why? Well, they had a big, successful family. They may have been a good-looking, noisy bunch! Besides that, they could chew their food, unlike the large herbivorous dinosaurs that swallowed their food whole.
 
²     Hadrosaurs lived in the late Cretaceous age. That was about 76 million years ago. Scientists also call them duck-billed dinosaurs because of their wide, flat snouts. They ate plants. They lived in Asia, North America, and Europe.
 
³     Their most useful feature may have been their teeth. Their teeth had interlocking rows. Because of this, hadrosaurs could chew their food. One member of the family had up to 1,000 teeth. When their old teeth wore out, hadrosaurs got new ones. Hadrosaurs also had strong cheek muscles. All those teeth and muscles were handy. Hadrosaurs ate leaves, branches, and seeds that needed to be chewed...a lot!
 
⁴     Hadrosaurs may have also been handsome. They had hollow crests on their heads. These crests came in different shapes. One hadrosaur looked like a unicorn. It had a single horn that stuck out between its eyes. Another hadrosaur had a beautiful round crest that looked like an elegant hat. A third member of the family may not have looked so handsome because it had a bony lump on its nose like a big wart.
 
⁵     Parasaurolophus had a huge crest. Of course, it was a huge hadrosaur. It was about 40 feet long and weighed about 2 tons. Its crest that swept back from the dinosaur's head was up to six feet long. A bony knob was at the end. This dinosaur may have looked like it was wearing a snorkel!

Paragraphs 6 to 12:
For the complete story with questions: click here for printable

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