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Hualianceratops wucaiwanensis

Osteichthyes - Chaoyangsauridae

Taxonomy
Hualianceratops wucaiwanensis was named by Han et al. (2015). Its type specimen is IVPP V18641, a partial skeleton (articulated right maxilla, jugal, postorbital and partial squamo- sal, articulated right quadrate and partial quadratojugal, articulated left partial jugal, qua), and it is a 3D body fossil. Its type locality is Wucaiwan ceratopsian 2 (IVPP), which is in an Oxfordian fluvial shale in the Shishugou Formation of China.

Synonymy list
YearName and author
2015Hualianceratops wucaiwanensis Han et al. p. 3–4
2019Hualianceratops wucaiwanensis Morschhauser et al. p. 135
2021Hualianceratops wucaiwanensis Breeden et al. p. 11

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
RankNameAuthor
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Cerapoda
Marginocephalia
Ceratopsia()
infraorderNeoceratopsia
familyChaoyangsauridae()
genusHualianceratops
specieswucaiwanensis

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.

Hualianceratops wucaiwanensis Han et al. 2015
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Diagnosis
ReferenceDiagnosis
F. Han et al. 2015A basal ceratopsian distinguished from other chaoyangsaurids by five autapomorphies: a prominent caudodorsal process on the infratemporal ramus of the jugal, a robust quadrate with an expansive quadratojugal facet, a transversely expanded rostral margin of the quadrate above the quadratojugal facet, a prominent notch near the ventral region of the quadrate, and a deep and short dentary. Unique combination of character states includes: strongly rugose sculpturing present on the lateral surface of the dentary (distinct from Chaoyangsaurus and Yinlong, but present in Xuanhuaceratops), transversely expanded ventral surface of the infratemporal ramus of the jugal (distinct from Yinlong, but present in Chaoyangsaurus), ventral grooves present on the quadratojugal for articulating with the caudal end of the jugal (distinct from Xuanhuaceratops, but present in Chaoyangsaurus and Yinlong).