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Eomamenchisaurus yuanmouensis

Reptilia

Taxonomy
Eomamenchisaurus yuanmouensis was named by Lü et al. (2008). Its type specimen is CXMVZA 165, a set of postcrania, and it is a 3D body fossil. Its type locality is Banqing Houshanliangzi, Jiangyi (Zhanghe Fm.), which is in a Jurassic terrestrial horizon in the Zhanghe Formation of China. It is the type species of Eomamenchisaurus.

Synonymy list
YearName and author
2008Eomamenchisaurus yuanmouensis Lü et al. pp. 17-18 figs. Pl. 1-4
2013Eomamenchisaurus yuanmouensis Suteethorn et al. p. 461

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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
classReptilia
subclassEureptilia()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Mamenchisauridae()
genusEomamenchisaurus
speciesyuanmouensis

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.

†Eomamenchisaurus yuanmouensis Lü et al. 2008
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Diagnosis
ReferenceDiagnosis
J. Lü et al. 2008A primitive mamenchisaurid dinosaur with dorsal vertebrae lacking pleurocoels; anterior articular surfaces of dorsal vertebrae flat to slightly convex; posterior articular surface moderately concave; neural spines of third and fourth sacral vertebrae weakly fused; postacetabular process of the ilium present, shaft of ischium straight and longer than pubis; cross-section of mid-shaft of ischium sub-oval; the fourth trochanter placed on posteromedial margin of femur; length ratio of tibia to femur approximately 0.64.
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesinfrao
Adult length: 10 to < 100infrao
Adult width: 10 to < 100infrao
Adult height: 10 to < 100infrao
Thickness: thickinfrao
Architecture: compact or denseinfrao
Form: sphericalinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: gregariousinfrao
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Diet: herbivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2004-12-14 12:49:10
Modified: 2004-12-14 14:49:10
Source: infrao = infraorder
Reference: Marsh 1875

Age range: Middle Jurassic or 174.70000 to 161.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Jurassic174.7 - 161.5China (Yunnan) Eomamenchisaurus yuanmouensis (type locality: 64016)