Juehuaornis traced and reconstructed from lo-rez data

Figure 1. Juehuaornis in situ with tracing

Figure 1. Juehuaornis in situ with tracing

Juehuaornis zhangi (Wang et al. 2015) is a new ornithuromorph genus from the Early Cretaceous of western Liaoning, China.

Figure 2. Juehuaornis reconstructed. Note the scale bars. This is a tiny bird.

Figure 2. Juehuaornis reconstructed. Note the scale bars. This is a tiny bird.

From the abstract: 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, major 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 represents a new ecotype of this group.

Figure 3. This is a very low rez image of the skull, the best I could wrangle from the original paper.

Figure 3. This is a very low rez image of the skull, the best I could wrangle from the original paper. That’s a hand over the skull. See figure 1. Not sure about the described premaxilla tip described in the paper. Requested high-rez data will replace this if it comes.

In the large reptile tree,
Juehuaornis nests with other small Early Cretaceous tobirds between Longicrusavis and higher toothed birds like Changzuiornis and Yanornis.

References
Wang R-F, Wang Y and Hu Dong-yu 2015. Discovery of a new ornithuromorph genus, Juehuaornis gen. nov. from Lower Cretaceous of western Liaoning, China. Global Geology 34(1):