| Yandangornis Temporal range: Late Cretaceous,
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| Holotype specimen | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Avialae |
| Clade: | †Yandangithiformes Cai & Zhao, 1999 |
| Family: | †Yandangithidae Cai & Zhao, 1999 |
| Genus: | †Yandangornis Cai & Zhao, 1999 |
| Species: | †Y. longicaudus
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| Binomial name | |
| †Yandangornis longicaudus Cai & Zhao, 1999
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Yandangornis is a genus of theropods (possibly avialans) from the Late Cretaceous Tangshang Formation of China. It lived 81.5 million years ago in what is now China. The type species, Y. longicaudus, was formally described by Cai and Zhou in 1999.