Alectrosaurus

Alectrosaurus seems to have been quite rare. It was much smaller than Tyrannosaurus rex; it was slender and does not preserve well. Like other members of the tyrannosaur family, it was bipedal. There have been a few findings of Alectrosaurus, and little has been published about them. printed about them. One important find is that it had a furcula (wishbone). For many years it was believed that only birds had this bone. It is now known to be common for a theropod. Since then other theropods have been found to have had them.

Alectrosaurus was discovered in 1923 during one of the American Museum of Natural History expeditions to China led by Roy Chapman Andrews. There was confusion when it was found originally, due to the fact that it was found with a segnosaur. The two animals were thought to be one. Chapman found a partial femur, tibia, fibula and pubic foot, It was described in 1933 by palaeontologist Charles W.Gilmore.. Since then a partial skull, shoulder girdle, ribs, fircula, should blade and two vertebrate have been discovered. There are no complete specimens, but there is enough skeleton material to reconstruct how it looked. It was re-described in 1989