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Ornatops incantatus

Reptilia - Hadrosauridae

Taxonomy
Ornatops incantatus was named by McDonald et al. (2021). Its type specimen is WSC 10058, a partial skeleton (partial R premaxilla, R postorbital, R squamosal, both quadrates, nearly complete skull roof and braincase, 2 partial dorsal vertebrae, a dorsal rib, ossified t), and it is a 3D body fossil. Its type locality is Ornatops type locality [WSC] (PROXY), which is in a Campanian/Campanian terrestrial horizon in the Menefee Formation of New Mexico. It is the type species of Ornatops.

Synonymy list
YearName and author
2021Ornatops incantatus McDonald 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()
—Archosauromorpha(Huene 1946)
—Crocopoda
RankNameAuthor
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Ornithopoda()
—Clypeodonta
—Iguanodontia()
—Dryomorpha
—Styracosterna
—Hadrosauriformes
—Hadrosauroidea()
familyHadrosauridae
subfamilyHadrosaurinaeLambe 1918
—Brachylophosaurini
genusOrnatops
speciesincantatus

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.

†Ornatops incantatus McDonald et al. 2021
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Diagnosis
ReferenceDiagnosis
A. T. McDonald et al. 2021brachylophosaurin distinguished by a single autapomorphy: nasofrontal suture on dorsal surface of frontals is horizontal rostrally and elevated caudally, ending in a pair of parasagittal bumps adjacent to the cranial midline. Furthermore, the nasofrontal suture extends caudally onto the dorsal surface of the frontals farther than in adult Probrachylophosaurus bergei, but not as far asin adult Brachylophosaurus canadensis.