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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Subsectio: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Theropoda
Cladus: Neotheropoda
Infraclassis: Aves
Cladus: Euavialae
Taxa: †Jixiangornis – Avebrevicauda
Name

Euavialae Gauthier 1986
References

Ji, Q.; Ji, S.; Zhang, H.; You, H.; Zhang, J.; Wang, L.; Yuan, C. & Ji, X. (2002): A new avialan bird - Jixiangornis orientalis gen. et sp. nov. - from the Lower Cretaceous of Western Liaoning, NE China. Journal of Nanjing University (Natural Sciences) 38(6): 723-736.
Lefèvre, U.; Hu, D.; Escuillié, F. O.; Dyke, G.; Godefroit, P. (2014). "A new long-tailed basal bird from the Lower Cretaceous of north-eastern China". Biological Journal of the Linnean Society. 113 (3): 790–804. doi:10.1111/bij.12343.

Euavialae (meaning "true winged birds") is a group of theropods which includes all avialan species more closely related to modern birds than to the basal, long-tailed birds Archaeopteryx and Jeholornis.[1]

Cladogram following the results of a phylogenetic study by Lefèvre et al., 2014:[2]

Avialae

Aurornis

Eosinopteryx

Anchiornis

Archaeopteryx

Xiaotingia

Rahonavis

Jeholornis

Euavialae

Jixiangornis

Avebrevicauda

†Omnivoropterygiformes

Pygostylia

†Confuciusornithiformes

Ornithothoraces



References

Ji, Q.; Ji, S.; Zhang, H.; You, H.; Zhang, J.; Wang, L.; Yuan, C. & Ji, X. (2002): A new avialan bird - Jixiangornis orientalis gen. et sp. nov. - from the Lower Cretaceous of Western Liaoning, NE China. Journal of Nanjing University (Natural Sciences) 38(6): 723-736 [in Chinese with English abstract].
Lefèvre, U.; Hu, D.; Escuillié, F. O.; Dyke, G.; Godefroit, P. (2014). "A new long-tailed basal bird from the Lower Cretaceous of north-eastern China". Biological Journal of the Linnean Society. 113 (3): 790–804. doi:10.1111/bij.12343.

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