Apatosaurus
Name	Apatosaurus (ah-PAT-uh-SOAR-us)
Means	Deceptive lizard
Period	Late Jurassic
Where	Wyoming, Colorado, Utah and Oklahoma
Size	Length: 75 feet Height: 30 feet Weight: 66,000 lbs
	Lumbering through the broad flatlands of the plain, Apatosaurus ate vast amounts of plant material (200 kilos, or 440 lbs!) each day to satisfy the needs of its huge size. Size was one of the best forms of protection that Apatosaurus had from predators. That, and the 50 ft tail which may have been cracked like a whip creating a deafening sound and warning others in the group of danger.