About 93 million years ago, a bizarre, plankton-eating shark shaped unlike any other known marine creature glided through the sea in what is now northeastern Mexico using curiously elongated, wing-like fins that made its body wider than it was long.
Scientists on Thursday announced the discovery of a nearly complete fossil of the shark, called Aquilolamna milarcae, which lived during the Cretaceous Period, at a time when dinosaurs ruled the land.
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