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Yunganglong datongensis

Reptilia

Taxonomy
Yunganglong datongensis was named by Wang et al. (2013). Its type specimen is SXMG V 00001, a partial skeleton, and it is a 3D body fossil. Its type locality is 2011 Locality 7, Zuoyun (SXMG), which is in a Cenomanian/Santonian terrestrial horizon in the Zhumapu Formation of China.

Synonymy list
YearName and author
2013Yunganglong datongensis Wang et al. p. 4 fig. 2–8
2014Yunganglong datongensis Xing et al. p. 1821
2015Yunganglong datongensis Ohashi et al. p. 4
2021Yunganglong datongensis Verdú et al. p. 4

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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()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Ornithopoda()
—Clypeodonta
—Iguanodontia()
—Dryomorpha
—Styracosterna
—Hadrosauriformes
—Hadrosauroidea()
genusYunganglong
speciesdatongensis

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.

†Yunganglong datongensis Wang et al. 2013
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Diagnosis
ReferenceDiagnosis
R.-F. Wang et al. 2013Basal hadrosauroid with the following unique combination of four character states: 1) caudal surface of the supraoccipital inclined steeply forward at approximately 45° (present in Yunganglong and more advanced taxa, but nearly vertical in Jintasaurus and less derived Hadrosauriformes); 2) caudolaterally extended horizontal portion of the paroccipital process and accompanying squamosal (present in Yunganglong and more advanced taxa, but laterally extended in Jintasaurus and less derived Hadrosauriformes); 3) pendent portion of the paroccipital process does not curve cranially (observed in Yunganglong and Jintasaurus; the pendant portion does curve cranially in Bactrosaurus and more advanced taxa); 4) intercondylar extensor groove of the femur deep, U-shaped, partially enclosed by expansion of medial and lateral condyles (present in Yunganglong and less derived Hadrosauriformes, but canal fully enclosed by fusion of lateral and medial condyles in Nanyangosaurus and more advanced taxa).