Could Spinosaurus swim? A new fossil with a scimitar-like head crest provides new evidence on the unsettled question. While other spinosaurids had head crests, the newly discovered Spinosaurus mirabilis has a more dramatic protrusion that may have served as a signaling function for potential mates or rivals. It also had interlocking, cone-shaped teeth, like those seen in modern crocodiles and ancient aquatic reptiles used to snag fish. This “fish trap” is just one of several traits that have fue

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