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The Science of Prehistoric GiantsReinforced Library Binding978-0-531-25833-0The first dinosaurs were small meat-eaters, or carnivores, that snapped up bugs and other small creatures. Then some dinosaurs started eating plants. They were herbivores. Over millions of years, bigger and bigger dinosaurs evolved. The plant-eaters, Learn MoreSpecial Price $21.75 Regular Price $29.00
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The Science of Sea MonstersReinforced Library Binding978-0-531-25832-3Millions of years ago, the oceans teemed with creatures that were every bit as fascinating and ferocious as the dinosaurs that ruled the land. These were the marine reptiles that seem completely alien to our modern eyes. These included the massive-ja Learn MoreSpecial Price $21.75 Regular Price $29.00