Yangchuanosaurus

Yangchuanosaurus was an extinct genus of theropod metriacanthosaurus, which lived about 160 million years ago as a top predator in China. 

It was a large and powerful carnivore that walked on two legs. The legs were powerfully built, had short arms, a short strong neck, a large head with powerful jaws and large serrated teeth. The tail was long and massive, about half its length. It had short arms. It had a small claw on the first digit of its foot. The three outer toes were used for weight bearing, and each was equipped with a large claw.

Yangchuanosaurus belonged to the superfamily Allosauridae that occurred worldwide from the late Jurassic to early Cretaceous. It had stalked its prey in herds and fed on the herbivores of its time, including the stegosaur Chungkingosaurus or even large sauropods. It was also found to have been a scavenger. 

The skull of the Yangchuanosaurus was large, up to 3.5 feet long, with ridges and a bony knob on its snout. Although it was slightly smaller, but very similar to its close relative the Allosaurus. 

It was estimated that Yangchuanosaurus reached up to 33 feet in length and weighed approximately 2350 kg.