It may have walked like a duck and swum like a penguin, but a flipper-limbed creature discovered in what is now Mongolia was no bird. The strange new species is the first known nonavian dinosaur that could both run and swim, researchers say.
To compensate for a long swanlike neck, probably used for dipping underwater for fish, this dino’s center of mass shifted toward its hips, allowing it to stand erect, similar to short-tailed waterfowl like ducks, scientists report December…
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