Nanuqsaurus

Nanuqsaurus ('meaning polar bear lizard') is a genus of theropod dinosaur. It is only known from one specimen, DMNH 21461, a partial skull roof found in Alaska. This dinosaur may grown to about 6 m (~20 ft) long, half the size of "Tyrannosaurus".
The skull would have been about 50 cm (1.65 ft) when complete.