PaleoDB taxon number: 68250
Full reference: X. Xu and M. A. Norell. 2004. A new troodontid dinosaur from China with avian-like sleeping posture. Nature 431:838-841
Sister taxa: none
Type specimen: IVPP V.12733, a skeleton. Its type locality is Lujiatun village, Beipiao (IVPP), which is in an Aptian fluvial tuff in the Yixian Formation of China.
Ecology: ground dwelling carnivore-omnivore
Average measurements (in mm): femur length 81.0, humerus length 42.0, radius length 39.0, scapula length 45.0, skull length 53.0, tibia length 106.0
Estimated body mass: 1.71 kg based on femur length