Sauropodomorphs included ground-shaking giants like Apatasaurus, and ornithischians included a range of dinosaurs, such as Stegosaurus and Triceratops.

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The protagonists are a tribe of intelligent triceratops who communicate with each other by way of an organic network.

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He helped unearth 16 fossilized triceratops, the scary three-horned rhinoceros-like dinosaur thought to have fought the giant Tyrannosaurus rex.

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His crowning achievement: a topiary triceratops, dubbed Trixie, made of succulent plants.

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Between them they named 130 species, doubling the number known to science, though many were so hastily identified, and based on so few bones, that they turned out to be duplicates (such as the massive herbivore apatosaurus, a.k.a brontosaurus) or mix-ups (such as the three-horned triceratops, which Marsh swore was "one of the largest of American bovines").

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