Tenontosaurus (ten-ON-to-SAW-rus Meaning Tendon Lizard) was a genus of a large Iguanodontian ornithopod dinosaur in the Early Cretaceous Period. It stood 23 feet tall and weighed two tons. Tenontosaurus was found in Canada, North America, and USA. It was attacked by Deinonychus and Acrocanthosaurus. The name Tenontosaurus means Tendon Reptile.
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