PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Liaoningornis

Reptilia

Taxonomy

Liaoningornis was named by Hou (1997). It is the type genus of Liaoningornithidae.

It was assigned to Liaoningornithidae by Hou (1997), Hou (1997) and Zhou and Wang (2010); to Enantiornithes by O'Connor (2012) and O'Connor and Zelenkov (2013); and to Ornithuromorpha by Kurochkin et al. (2013) and Wang et al. (2014).

Species

L. longidigitris

Synonymy list

Year	Name and author
1997	Liaoningornis Hou p. 100
2010	Liaoningornis Zhou and Wang
2012	Liaoningornis O'Connor p. 35
2013	Liaoningornis Kurochkin et al.
2013	Liaoningornis O'Connor and Zelenkov
2014	Liaoningornis Wang et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()

Rank	Name	Author
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Theropoda	()
—	Neotheropoda
—	Averostra	Paul 2002
—	Tetanurae
—	Coelurosauria	()
—	Maniraptora
—	Paraves
class	Aves
—	Pygostylia	Chiappe 2002
—	Ornithothoraces
—	Ornithuromorpha	Chiappe et al. 1999
genus	Liaoningornis

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Liaoningornis Hou 1997

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†Liaoningornis longidigitris Hou 1997

Diagnosis

Reference	Diagnosis
L. H. Hou 1997	Sternum possesses a well developed carina, presternum is present, ribs are robust, distolateral condyle of the humerus is enlarged, femur head is particularly well developed, and distal condyles are enlarged, tarsometatarsus is only half the length of the tibiotarsus, and length of the medial pes digit (not including the ungual) exceeds the tarsometatarsus.