Labels:animal | reptile | dinosaur | mammal | text | tyrannosaurus OCR: 150 MYA STEGOSAURUS THE STEGOSAURS WERE a group of dinosaurs that evolved during the Jurassic Period. The largest of the stegosaurs was Stegosaurus. Stegosaurs had a small head and a massive armored body with rows of bony plates that ran from the neck to halfway down the spiky tail. BONY PLATES TAIL SPIKES SMALL SKULL SPIKY ARMOR Stegosaurus probably used the spikes on its tail for defense. CO TO TIMELINE
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