A gigantic caenagnathid oviraptorosaurian (Dinosauria: Theropoda) from the Upper Cretaceous of the Gobi Desert, Mongolia

作者：Tsuihiji Takanobu^*; Watabe Mahito; Bar**old Rinchen; Tsogtbaatar Khishigjav

来源：Cretaceous Research, 2015, 56: 60-65.

DOI：10.1016/j.cretres.2015.03.007

• Caenagnathidae
• Oviraptorosauria
• Bayn Shire Formation

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 consistent with the hypothesized correlation between the Bayn Shire and Iren Dabasu formations based on the co-occurrences of vertebrate fossils, especially turtles.

• 出版日期2015-12