Full reference: L. Hou. 1994. [A late Mesozoic bird from Inner Mongolia]. Vertebrata PalAsiatica 32(4):258-266
Sister taxa: none
Type specimen: IVPP V 9607, a partial skeleton (associated elements of the forelimb and shoulder girdle with some flight feathers). Its type locality is Otog Sumu (bed 5), which is in a Cretaceous fluvial-lacustrine sandstone/mudstone in the Jingchuan Formation of China.
Ecology: ground dwelling carnivore