Conceptual illustration of Dromaeosaurus, thought to lay their eggs in open nests, brood on them during incubation and care for the young clutch for a period of time. Dromaeosaurus is a genus of feathered theropod dinosaur which lived during the Late Cretaceous period, sometime between 80 and 72.8 million years ago, in Alberta, Canada, and the western United States. Dromaeosaurus had a relatively robust skull with a deep snout. Its mouth was full of sharp teeth, and it had a sharply curved sickle claw on each foot.