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Songzia heidangkouensis

Reptilia - Avetheropoda - Songziidae

Taxonomy
Songzia heidangkouensis was named by Hou (1990). Its type specimen is IVPP. v 8756, a partial skeleton (partially complete skeleton with complete skull and hind limbs), and it is a compression fossil. Its type locality is Near Jingzhou, which is in an Eocene terrestrial shale in the Yangxi Formation of China. It is the type species of Songzia.

Synonymy list
YearName and author
1990Songzia heidangkouensis Hou

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
RankNameAuthor
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
PygostyliaChiappe 2002
Ornithothoraces
OrnithuromorphaChiappe et al. 1999
subclassOrnithurae
subclassNeornithesGadow 1893
Neognathae(Pycraft 1900)
NeoavesSibley et al. 1988
Terrestrornithes
Telmatorae
superorderCharadriimorphaeHuxley 1867
orderRalliformes
suborderRalli
familySongziidae
genusSongzia
speciesheidangkouensis

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.

Diagnosis
ReferenceDiagnosis
L. Hou 1990The fossil has an apparently large dorsal inflection of the bill on the frontal, the nasal does not extend downward, it is holorhinal. The posterior process of the mandible is not developed. The bill is shorter than the length of the cranium. Ulna vertical in shaft. The internal condyle of the tibiotarsus is round. The tuberal of the supratendinal bridge is very well developed. The tarsometatarsus is relatively long, 2/3 of the length of the tibiotarsus. The middle toe is shorter than the tarsometatarsus.