Dryptosaurus (from Greek δρύπτω, drypto, "to tear" and σαυρος sauros, "lizard" ) was a genus of primitive tyrannosaur that lived in Eastern North America during the middle Maastrichtian stage of the Late Cretaceous period. Although largely unknown now outside of academic circles, a famous painting of the genus by Charles R. Knight made it one of the more widely known dinosaurs of its time, in spite of its poor fossil record. Its specific name aquilunguis is Latin for "having claws like an eagle's". It should be noted that Dryptosaurus was the only know basal tyrannosaur known from the eastern North American, aka Appalachia, until 2005 with the discovery of Appalachiosaurus montgomeriensis.
Dryptosaurus appears as an enemy in the Dinosaur videogame: it is one of the strongest meat eaters, after Spinosaurus and Carnotaurus. The first Dryptosaurus appears as the boss of the third level, and is unkillable, so it must be lured into a trap to be defeated. It is subsequently found more commonly in the latter part of the game, when can be killed by Aladar.