Appalachiosaurus (meaning "Appalachian lizard") was a type of tyrannosaur from the late Cretaceous period. So far, only one fossil has been found, which is of a juvenile specimen, due to open sutures between the bones of the skull. One remarkable discovery from the specimen contains bite mark from a Deinosuchus, a type of crocodile. The injury shows signs of healing, which indicate that the dinosaur survived the attack.
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