DEAGOSTINI / UIG / SCIENCE PHOTO LIBRARY DEAGOSTINI / UIG / SCIENCE PHOTO LIBRARY
Deinonychus attacking Tenontosaurus. Computer illustration of three Deinonychus sp. theropods attacking a Tenontosaurus sp. ornithopod. These dinosaurs lived from the Aptian (around 125 million years ago) to Albian (around 100 million years ago) stages of the Cretaceous period, in what is now western North America.
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