Prehistoric shark named after video game A newly discovered fossil shark has been named after the 1980s arcade game, Galaga. The Galagadon lived in the rivers of South Dakota around 67 million years ago, at the same time as Tyrannosaurus rex 30cm-45cm Tooth: Discovered by volunteer sorting through fossils at Chicago’s Field Museum Less than 1mm Galaga: Fixed shooter arcade game released in 1981 Galagadon nordquistae: Named after resemblance of tooth to Galaga spaceship, and Karen Nordquist (right), museum volunteer who discovered it Space Fighter UNITED STATES South Dakota Pictures: Velizar Simeonovski/Karen Bean (Field Museum), Namco, Chattanooga Pinball Sources: Journal of Paleontology (Cambridge University), Field Museum, BBC © GRAPHIC NEWS