A large, isolated symphyseal region of fused dentaries of an oviraptorosaurian was found in
the Upper Cretaceous Bayn Shire Formation at Tsagaan Teg in the Mongolian Gobi Desert.
A phylogenetic analysis places this specimen within Caenagnathidae. This specimen is
comparable in size and morphology to the gigantic caenagnathid Gigantoraptor erlianensis
from the Iren Dabasu Formation in China and is likely closely related to it. The occurrence of
the specimen with possible affinities to G. erlianensis in the Bayn Shire Formation is …