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This dinosaur found in Chile had a battle ax for a tail

Chilean researchers announced the discovery of a new species of ankylosaur, a family of dinosaurs known for their heavy armour, from subantarctic Chile.

The animal, which they named Stegouros elengassen, offers new clues about where these tank-like dinosaurs came from — and features a bizarre, bony tail shaped like a club that was wielded by Aztec warriors.