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Chaoyangsaurus youngi

Reptilia - Chaoyangsauridae

Taxonomy
Chaoyangsaurus youngi was named by Zhao et al. (1999). Its type specimen is IGCAGS V371, a partial skeleton, and it is not a trace fossil. It is the type species of Chaoyangsaurus.

Synonyms
Synonymy list
YearName and author
1983Chaoyangosaurus liaosiensis Zhao and Cheng
1985Chaoyoungosaurus liaosiensis Zhao p. 289
1999Chaoyangsaurus youngi Zhao et al.
2000Chaoyangsaurus youngi Sereno p. 487
2001Chaoyangsaurus youngi Lambert et al. p. 7
2001Chaoyangsaurus youngi Makovicky p. 255
2004Chaoyangosaurus youngi Chinnery p. 584
2004Chaoyangsaurus youngi You and Dodson p. 480
2006Chaoyangsaurus youngi Zhao et al. p. 467
2008Chaoyangsaurus youngi Butler et al. p. 9
2009Chaoyangsaurus youngi Jin et al. p. 204
2012Chaoyangsaurus youngi Han et al. p. 1391 fig. 14
2015Chaoyangsaurus youngi Han et al. p. 1

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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()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Clypeodonta
Cerapoda
Marginocephalia
Ceratopsia()
familyChaoyangsauridae()
genusChaoyangsaurus
speciesyoungi

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
R. J. Butler et al. 2008Quadratojugal overlaps posterior side of the quadrate shaft; quadrate slopes strongly anteriorly; ridge present between the planar lateral and ventral surfaces of the angular.