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Aquilops americanus

Reptilia

Taxonomy
Aquilops americanus was named by Farke et al. (2014). Its type specimen is . OMNH 34557, a partial skull (partial skull, with associated predentary, partial left dentary, and additional associated but unidentifiable fragments), and it is a 3D body fossil. Its type locality is OMNH locality V1057, which is in an Albian/Albian terrestrial claystone in the Cloverly Formation of Montana.

Synonymy list
YearName and author
2014Aquilops americanus Farke et al. p. 4–5 figs. 3-9
2015Aquilops americanus Frederickson et al. p. 65
2015Aquilops americanus Han et al. p. 1
2020Aquilops americanus Yu et al. p. 1
2022Aquilops americanus Son et al. p. 7

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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()
Ornithischia()
Genasauria
Cerapoda
Marginocephalia
Ceratopsia()
infraorderNeoceratopsia
genusAquilops
speciesamericanus

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.

Aquilops americanus Farke et al. 2014
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Diagnosis
ReferenceDiagnosis
A. A. Farke et al. 2014A small neoceratopsian with the following autapomorphies: rostral with a ventrally-directed tip and a strongly arched keel possessing a boss; oral margin rostral to maxillary tooth row entirely concave in lateral view; antorbital fenestra more than twice as long as tall and tapering to a sharp point below the orbit.