Size and Weight:
The only remains of the obscure but amusingly named Gasosaurus were discovered in 1985 by the employees of a Chinese gas-mining company. From the limited number of fossils, adding up to a single partial skeleton, paleontologists believe that Gasosaurus resembled a vastly scaled-down Allosaurus, its fellow (and more famous) theropod, though its arms were a bit longer compared to its overall size.
Because so few fossils of Gasosaurus have been located, it's possible that this dinosaur may have been misclassified--and is in fact a species, or a specimen, of Megalosaurus or Kaijiangosaurus. Only future discoveries can settle this issue for sure.