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Yandusaurus hongheensis

Reptilia

Taxonomy
Yandusaurus hongheensis was named by He (1979). Its type specimen is GCC V20501, a skeleton, and it is a 3D body fossil. Its type locality is Honghe Dam, Hongheba, which is in a Bajocian terrestrial horizon in the Shaximiao Formation of China.

Synonymy list
YearName and author
1979Yandusaurus hongheensis He
1983Yandusaurus hungheensis He and Cai p. 5
1984Yandusaurus hongheensis He p. 70
1984Yandusaurus hongheensis He and Cai p. 4
1985Yandusaurus hongheensis Zhao p. 289
1990Yandusaurus honheensis Sues and Norman p. 500
1992Yandusaurus hongheensis Dong p. 165
1992Yandusaurus hongheensis Weishampel and Heinrich p. 171
1994Yandusaurus hongheensis Carpenter p. 295
1996Yandusaurus hongheensis Molnar p. 651
1997Yandusaurus hongheensis Sues p. 357
1999Yandusaurus hongheensis Knoll p. 65
2002Yandusaurus hongheensis Buchholz p. 19
2004Yandusaurus hongheensis Norman et al. p. 395
2005Yandusaurus hongheensis Barrett et al. pp. 824-826
2005Yandusaurus hongheensis Peng et al.
2008Yandusaurus hongheensis Butler et al. p. 11
2011Yandusaurus hongheensis Li et al. p. 24
2012Yandusaurus hongheensis Han et al. p. 1390
2012Yandusaurus hongheensis Zheng et al. p. 208
2014Yandusaurus hongheensis Xing et al. p. 207
2018Yandusaurus hongheensis Bell et al. p. 17
2019Yandusaurus hongheensis Herne et al. p. 573
2020Yandusaurus hongheensis Dieudonné et al.
2023Yandusaurus hongheensis Manitkoon et al. p. 1

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Neornithischia()
genusYandusaurusHe 1979
specieshongheensisHe 1979

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.

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Diagnosis
ReferenceDiagnosis
G. Peng et al. 2005Medium-sized ornithopod about 3.2 m of body length. It is recognized by triangular maxilla with a narrow but long dorsal process and a longitudinal lateral ridge; triradial jugal with a extremely ventrally arched ventral margin; broad and Buddha hand-shaped maxillary teeth with developed wear surfaces so that outer side of crowns deeper than its inner side; tooth crown with a short lateral ridge along anterior and posterior margins, but lacking median ridge; platyancoelous cervical centra with obvious ventral keels; amphiplatyan dorsals; scapula with laterally convex shaft; coracoid with an obvious anteroventral ridge; length of humerus same as that of scapula; obviously arched radius less than 2/3 of humerus length; inner distal condyle of femur much bigger than outer one.
R. J. Butler et al. 2008The mid–posterior cervicals have circular, pit-like depressions developed at the base of their postzygapophyses.