Named By: Mark Norell, James Clark, Alan Turner, Peter Makovicky, Rinchen Barsbold & Timothy Rowe - 2006.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Deinonychosauria, Dromaeosauridae, Velociraptorinae.
Species: T. mangas (type).
Size: Estimated to be around 2 meters long.
Known locations: Mongolia, Ömnögovi Province - Djadokhta Formation.
Time period: Campanian of the Cretaceous.
Fossil representation: Skull and cervical (neck) vertebrae and shoulder girdle.
Originally thought to be another specimen of Velociraptor, a CAT scan in 1998 revealed that the fossil was of a new though closely related genus. Additional study of Tsaagan has indicated that it is most closely related to Linheraptor. Tsaagan probably lived and hunted like most other small Asian dromaeosaurids, hunting either other small dinosaurs as well as possibly smaller vertebrates such as lizards or even small mammals like Zalambdalestes.
- A new dromaeosaurid theropod from Ukhaa Tolgod (Ömnögov, Mongolia). - American Museum Novitates 3545:1-25. - M. A. Norell, J. M. Clark, A. H. Turner, P. J. Makovicky, R. Barsbold & T. Rowe - 2006.