Paleontologists have discovered a new dinosaur species with a very distinctive feature, a sail-like structure running down its back, the Natural History Museum in London announced on Friday.

The bones of Istiorachis macarthurae, named in honor of record-breaking British sailor Ellen MacArthur, were uncovered on the Isle of Wight , a small island just off the south coast of England, where it roamed more than 120 million years ago alongside other Iguanodon relatives — a group of herbivorous dinosaurs that lived from the Late Jurassic to Early Cretaceous periods.

Scientists aren’t exactly sure exactly why it had such an exaggerated sail-like feature on its back, though they hypothesize it might have helped the dinosaurs attract a partner and recognize each other as belonging to the sa

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