Olorotitan was one of the most elegant dinosaurs of all time. The 26-foot-long hadrosaur, found in the Late Cretaceous rocks of eastern Russia, had the typical deep tail, beefy legs and slender arms of its kin, but a fan-shaped crest jutting out of the back of the dinosaur’s skull gave it a striking profile. As with its North American cousins Corythosaurus and Lambeosaurus, the hollow head ornament is what makes this dinosaur stand out.
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