Named By: Altangerel Perle - 1980.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Therizinosauridae.
Species: E. andrewsi (type).
Size: Estimated at 4.5 to 6 meters long. Skull is twenty-five centimetres long.
Known locations: Mongolia - Bayan Shireh Formation.
Time period: Cenomanian to Santonian of the Cretaceous.
Fossil representation: Almost complete skull with mandible (lower jaw) and partial post cranial remains.
Named after Erlik, the demon king in Mongolian mythology, Erlikosaurus was a ground breaking discovery as it was the first therizinosaurid skull known to science. Despite the overall lack of other skeletal material, this skull made Erlikosaurus a model for other therizinosaurids, which at the time were only known from their post cranial remains, to be based on. That has worked both ways however, with post cranial material from other therizinosaurids filling in for Erlikosaurus's missing skeleton. Erlikosaurus has a particularly strong association with the related Segnosaurus from the same fossil formation.