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Stegoceras novomexicanum

Reptilia

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. 202–203 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

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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
—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.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yesg
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-08-25 05:49:46
Modified: 2005-08-25 07:49:46
Source: g = genus, o = order
References: Marsh 1875, Peczkis 1995

Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Sphaerotholus goodwini (53514) Stegoceras novomexicanum (76714 type locality: 144518 144519 144520)