Jinguofortis is a genus of primitive avialan belonging to the clade Pygostylia that lived during the Valanginian stage of the Early Cretaceous.

It was found in the Dabeigou Formation in northeastern China, and isotope dating from the samples overlying the bird-bearing horizon is 127 million years ago.

This is an apparent example of convergent evolution, suggesting that these early avialans likely acquired a high rate of osteogenesis (tendency for bone formation) similar to other theropods.

By this time, the pectoral (shoulder) girdle developed further modifications, including an ossified sternal keel and formation of the triosseal canal.

[1] Wang et al. (2018) recovered Jinguofortis as a basal pygostylian more derived than Confuciusornithiformes, but more primitive than Sapeornithiformes, and as sister to the previously problematic genus Chongmingia.