JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Mononykus dinosaur anatomy. Computer illustration of a Mononykus sp. dinosaur, showing its skeletal structure (top) and large claws (lower left) used to kill prey. This carnivorous theropod lived during the Late Cretaceous Period (around 100 to 66 million years ago) in what is now Mongolia. It reached lengths of only around 1 metre.
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