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Houornis caudatus

Reptilia - Avetheropoda

Taxonomy
Cathayornis caudatus was named by Hou (1997). Its type specimen is IVPP V10917, a skeleton (complete skeleton), and it is a 3D body fossil. Its type locality is Beishan Quarry, Boluochi, which is in an Aptian lacustrine mudstone in the Jiufotang Formation of China.

It was synonymized subjectively with Cathayornis yandica by Zhou and Wang (2010); it was considered a nomen dubium by O'Connor and Dyke (2010); it was recombined as Houornis caudatus by Wang and Liu (2015).

Synonymy list
YearName and author
1997Cathayornis caudatus Hou p. 72
1999Cathayornis caudatus Wang et al. p. 3
2015Houornis caudatus Wang and Liu

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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
RankNameAuthor
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
PygostyliaChiappe 2002
Ornithothoraces
subclassEnantiornithes
genusHouornis
speciescaudatus()

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. H. Hou 1997A small species of Cathayornis with a transverse trough lying between the frontal and parietal. There is a minimum of three pairs of teeth on the mandible, a relatively well developed carina is present on the sternum, the tarsometatarsus is elongated and exceeds half the length of the tibiotarsus, caudals are unfused such that there is no pygostyle but instead a small tail is present.