Dinosaurs ruled the earth millions of years ago, coming in various ____. Some dinosaurs were as small as ____, while others weighed up to ____. Dinosaurs had different diets, with some being ____ and others being vegetarians. They had horns, spikes, ____, or tough scaly skin covering their bodies. Dinosaurs had legs that stood ____ their bodies, allowing them to run ____ than other reptiles. Scientists believe dinosaurs evolved unique features like lighter, stronger ____ and powerful ____. Some scientists think dinosaurs were ____, giving them more energy and possibly bigger ____. Dinosaurs walked the earth for over ____, with many species yet to be ____.

Dinosaurs

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