SciencePrehistoric Shark Galagadon Had Teeth Shaped Like Spaceships In 1980s Arcade Game 'Galaga' The prehistoric freshwater shark was named Galagadon nordquistae because of the shape of its teeth. They looked like the spaceships in the 1980s video game 'Galaga.' The species lived alongside dinosaurs during the Cretaceous period.by Allan Adamson
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