Named By: Dong Zhiming - 1984.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Tetanurae, Megalosauroidea.
Species: X. quilixiaensis.
Size: Possibly up to 6 meters long.
Known locations: China, Xiashaximiao formation.
Time period: Bathonian to Callovian of the Jurassic.
Fossil representation: Only a partial skeleton consisting of a four dorsal and two cervical vertebrae, one forelimb with the shoulder girdle.
Not much is known about this dinosaur except that the forelimbs appear to be quite large for a large carnivorous theropod. The discoverer theorised that it may of actually been quadrupedal, but this has since been refuted by other palaeontologists.