1�� Paleontological Institute of Shenyang Normal University��Shenyang 110034��China; 2�� Key Laboratory for Evolution of Past Life in Northeast Asia��Ministry of Land and ��esources��Shenyang 110034��China

Here we report on a new basal ornithuromorph bird��Juehuaornis zhangi gen�� et sp�� nov�� ��based on a nearly complete and articulated subadult skeleton from the Lower Cretaceous Jiufotang Formation in Lingyuan of western Liaoning��China�� It displays ornithomorph synapomorphies��such as a synsacrum composed of 12 sacral vertebrae��a short pygostyle��long and curved scapula��U �� shaped furcula without a hypocleidum��coracoid with a developed procoracoid process and a concaved lateral margin��a keel extended along the full length of sternum��ma- jor and minor metacarpals fused proximally and distally��and proximal phalanx of digit II expanded caudally�� The new specimen is distinguishable from other known ornithuromorphs by some unique features including a long rostrum for approximately 70% the total length of the skull��cranial end of upper jaw hooked��and cranial end of lower jaw straight�� The new specimen provides new important morphological information regarding Ornithomorpha��and it re- presents a new ecotype of this group��