Xiongguanlong, named after the city of Jiayuguan in northwestern China, is a genus of tyrannosauroid dinosaur from the Aptian to Albian ages of the Early Cretaceous Period (100 to 125 million years ago).
The type species, X. baimoensis, was described in 2009 by a group of researchers from China and the USA. The species name, baimoensis, means “white ghost”, after “white ghost castle”, a rock formation near where the fossil was found.
Xiongguanlong was a medium-sized tyrannosauroid. It was split off from the main branch of the Tyrannosauroidea just below the Appalachiosaurus. It is a sister member of both Appalachiosaurus and Tyrannosauridae.
The long muzzle of Xiongguanlong gives it resemblance to Alioramus.