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Zuoyunlong huangi

Reptilia

Taxonomy
Zuoyunlong huangi was named by Wang et al. (2017). Its type specimen is SXMG V 00004, a set of limb elements (including the nearly complete right ilium missing most of the preacetabular process, and the distal end of the right ischium), 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
2017Zuoyunlong huangi Wang et al.
2021Zuoyunlong huangi 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()
genusZuoyunlong
specieshuangi

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.

†Zuoyunlong huangi Wang et al. 2017
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Diagnosis
ReferenceDiagnosis
R.-F. Wang et al. 2017Non-hadrosaurid hadrosauroid with the following unique combination of characters (autapomorphy marked by an asterisk): (1) very short postacetabular process about 50% as long as the iliac central plate*; (2) relatively long, stick-shaped pubic peduncle of the ilium (shared with Probactrosaurus and more basal iguanodontians); (3) ischial peduncle of the ilium formed by a single large knob (shared with Probactrosaurus and more basal iguanodontians); (4) modest lateral swelling along the dorsal edge of the ilium with a more prominent caudal half, whose length is about 90% the length of the central plate (shared with Probactrosaurus); (5) apex of the lateral swelling located dorsal and slightly caudal to the caudal end of the ischial peduncle (present in Eolambia and more derived non-hadrosaurid hadrosauroids); (6) sacral ridge situated at about 75% the dorsoventral height of the iliac central plate (shared with Probactrosaurus and many more advanced hadrosauroids); and (7) elongate, subtriangular distal boot of the ischium that is ventrally directed, with a pointed extremity (present in Eolambia).