Nation It’s a bird! It’s a dinosaur! No, apparently it’s a lizard, as study authors issue retraction August 5, 2020 Jorge L. Ortiz, USA TODAY Comments Off on It’s a bird! It’s a dinosaur! No, apparently it’s a lizard, as study authors issue retraction Researchers thought they discovered the world's smallest dinosaur, a bird-like creature less than the size of a hummingbird. But they were wrong.