Struthiosaurus (meaning "Ostrich Lizard") was a dwarf ankylosaur from Late Cretaceous Hateg Island. It was 6 feet long, which is a roughly 10 feet shorter than Polacanthus. It was so small, that it is the smallest ankylosaur ever found. It had bony studs on it's back and neck. On it's side, it had spikes.

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