Mr. deinonychus
Mr. Deinonychus is a Deinonychus who lives in Deinonychus Depot Station with his wife and his son, Derek during the Cretaceous Period. He knows Mrs. Pteranodon before he met Buddy and Tiny. He tends to train Derek to use his toe-claw in hunting, but in the end he shows he's proud of him for using it for art.

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