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New dinosaur species with 'sail' on its back discovered

PhD student Jeremy Lockwood identified Istiorachis macaruthurae, a new iguanodontian dinosaur with a pronounced sail likely evolved for sexual display, enhancing understanding of Early Cretaceous ecosystems.

Summary by RTÉ
Scientists have discovered a new species of dinosaur which had an "eye-catching sail" along its back and tail which might have been used to attract mates.

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Paleontologists have discovered a new species of dinosaur with a very distinctive feature: a sail-like structure running along its back, London's Natural History Museum announced Friday.

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RTÉ broke the news in Ireland on Friday, August 22, 2025.
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