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A fossilized skull and jawbones found in Niger belonged to a creature that had a large, bony crest atop its head and lived some 95 million years ago. Named Spinosaurus mirabilis, it is the first species of Spinosaurus to be identified in more than a century. The findings, which published February 19 in the journal Science, suggest that the prehistoric creature is a close relative of Spinosaurus aegyptiacus, a giant fish-eating dinosaur with a sail across its back, first described in 1915 by German paleontologist Ernst Stromer von Reichenbach. This discovery may answer a long-debated question among scientists about Spinosaurus species: Were they marine pursuit predators — animals that dove and swam after prey — or were they more like herons, wading at the shoreline and strategically striking fish in shallow water?