Alectrosaurus, which is a medium-sized carnivore from the Late Cretaceous period, was discovered by George Olsen while on the Third Asiatic Expedition of the American Museum of Natural History in 1923.
Alectrosaurus, which is a medium-sized carnivore from the Late Cretaceous period, was discovered by George Olsen while on the Third Asiatic Expedition of the American Museum of Natural History in 1923.