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Mamenchisaurus constructus

Reptilia - Mamenchisauridae

Taxonomy
Mamenchisaurus constructus was named by Young (1954). Its type specimen is IVPP AS V.790, a partial skeleton, and it is a 3D body fossil. Its type locality is Mamenchi Ferry, Yibin, which is in an Oxfordian fluvial sandstone in the Shangshaximiao Formation of China. It is the type species of Mamenchisaurus.

Synonymy list
YearName and author
1954Mamenchisaurus constructus Young p. 492
1958Mamenchisaurus constructus Young p. 3 fig. 3
1964Mamenchisaurus constructus Tatarinov p. 545
1970Mamenchisaurus constructus Steel p. 71
1977Mamenchisaurus constructus Rozhdestvensky p. 113
1983Mamenchisaurus constructus Dong et al. pp. 54-55 figs. Pl. 17:2
1984Mamenchisaurus constructus He p. 62
1990Mamenchisaurus constructus McIntosh p. 394
1992Mamenchisaurus constructus Dong p. 78
1994Mamenchisaurus constructus Russell and Zheng p. 2089
1996Mamenchisaurus constructus Zhang and Chen
1998Mamenchisaurus constructus Dong p. 81
1999Mamenchisaurus constructus Martin-Rolland pp. 305-306 fig. 18
2002Mamenchisaurus constructus Ouyang and Ye pp. 98-99
2004Mamenchisaurus constructus Upchurch et al. p. 262
2007Mamenchisaurus constructus Naish and Martill p. 498
2008Mamenchisaurus constructus Lü et al. p. 21

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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()
RankNameAuthor
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Eusaurischia
Sauropodomorpha(Huene 1932)
Massopoda
Sauropodiformes
Sauropoda()
Eusauropoda
familyMamenchisauridae
genusMamenchisaurus
speciesconstructus

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
Z. Dong et al. 1983A moderate-sized sauropod approximately 13 m in length. Cervical and dorsal pleurocoels are particularly large and centra are opisthocoelous. Cervical vertebrae are extremely large, dorsal spines are relatively flat and straight, and cervical ribs are distinctly grooved with wide and thin termini. Dorsal vertebrae are relatively laterally concave. The first six to seven caudals are deeply procoelous, but in the mid-series and posterior series are amphiplatyan. The caudal mid-series haemal arches are bifurcated but not large and have fused dorsal margins, unlike the opened morphology of Diplodocus. Hindlimbs are relatively thin and small.