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Stegoceras novomexicanum

Osteichthyes

Taxonomy
Stegoceras novomexicanum was named by Jasinski and Sullivan (2011). Its type specimen is NMMNH P-33898, a partial skull (frontoparietal), and it is a 3D body fossil. Its type locality is NMMNH L-3097, which is in a Campanian terrestrial shale in the Fruitland Formation of New Mexico.

Synonymy list
YearName and author
2011Stegoceras novomexicanum Jasinski and Sullivan p. 202 figs. 3-7
2011Stegoceras novomexicanum Watabe et al. p. 494
2015Stegoceras novomexicanum Jasinski p. 79
2017Stegoceras novomexicanum Schott and Evans p. 898
2018Stegoceras novomexicanum Evans et al. p. 132
2021Stegoceras novomexicanum Woodruff et al. p. 581
2024Stegoceras novomexicanum Wick and Lehman p. 90

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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()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Marginocephalia
—Pachycephalosauria()
—Eupachycephalosauria
genusStegoceras
speciesnovomexicanum

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.

†Stegoceras novomexicanum Jasinski and Sullivan 2011
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Diagnosis
ReferenceDiagnosis
S. E. Jasinski and R. M. Sullivan 2011Differs from Stegoceras validum in possessing the following features: posteromedial extension of the parietal reduced and sub-rectangular; squamosal sutural surface contacts of the posteromedial extension of the parietal roughly parallel; supratemporal fenestrae more medial and enlarged; gracile and small adult size.