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Hexinlusaurus multidens

Reptilia -

Taxonomy
Yandusaurus multidens was named by He and Cai (1983). It is not extant. Its type specimen is ZDM T6001. Its type locality is Dashanpu Dinosaur Quarry, Xiashaximiao, which is in a Bajocian/Callovian lacustrine sandstone/mudstone in the Xiashaximiao Formation of China.

It was synonymized subjectively with Yandusaurus honheensis by Sues and Norman (1990); it was synonymized subjectively with Xiaosaurus dashanpensis by Dong (1992); it was recombined as Agilisaurus multidens by Peng (1992) and Sues (1997); it was synonymized subjectively with Yandusaurus hongheensis by Carpenter (1994); it was recombined as Hexinlusaurus multidens by Barrett et al. (2005), Butler et al. (2008), Butler and Sullivan (2009), Butler and Zhao (2009), Carpenter (2010), Zheng et al. (2012) and Han et al. (2012).

Synonymy list
YearName and author
1983Yandusaurus multidens He and Cai p. 6
1984Yandusaurus multidens He and Cai pp. 4-5
1992Agilisaurus multidens Peng p. 53
1997Agilisaurus multidens Sues p. 357
2005Hexinlusaurus multidens Barrett et al. p. 830
2005Yandusaurus multidens Zan et al. p. 187
2008Hexinlusaurus multidens Butler et al. p. 9
2009Hexinlusaurus multidens Butler and Sullivan p. 27
2009Hexinlusaurus multidens Butler and Zhao pp. 65-66
2010Hexinlusaurus multidens Carpenter p. 156
2012Hexinlusaurus multidens Han et al. p. 1391 fig. 14
2012Hexinlusaurus multidens Zheng et al. p. 208

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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()
RankNameAuthor
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
genusHexinlusaurus
speciesmultidens()

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
P. M. Barrett et al. 2005A small ornithischian dinosaur distinguished from all other basal ornithischians by a single autapomorphy, the presence of a marked concavity that extends over the lateral surface of the postorbital.
R. J. Butler et al. 2008A marked concavity that extends over the lateral surface of the postorbital.