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Kosmoceratops richardsoni

Reptilia - Ceratopsidae

Taxonomy
Kosmoceratops richardsoni was named by Sampson et al. (2010). Its type specimen is UMNH VP 17000, a skull, and it is a 3D body fossil. Its type locality is UMNH VP 890, GS-ENM, which is in a Campanian channel sandstone in the Kaiparowits Formation of Utah.

Synonymy list
YearName and author
2010Kosmoceratops richardsoni Sampson et al. p. 3 figs. 2, 5-6
2011Kosmoceratops richardsoni Maidment and Barrett p. 2
2013Kosmoceratops richardsoni Loewen et al. p. 496
2014Kosmoceratops richardsoni Longrich p. 299
2016Kosmoceratops richardsoni Mallon et al. p. 5
2022Kosmoceratops richardsoni Mallon et al. p. 159

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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
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Marginocephalia
—Ceratopsia()
familyCeratopsidae
subfamilyChasmosaurinae
genusKosmoceratops
speciesrichardsoni

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.

†Kosmoceratops richardsoni Sampson et al. 2010
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Diagnosis
ReferenceDiagnosis
S. D. Sampson et al. 2010Chasmosaurine ceratopsid diagnosed by the following autapomorphies: internal naris rostrocaudally abbreviated and caudodorsally inclined; nasal horncore transversely constricted, long-based, and blade-like, with flattened distal portion; supraorbital horncores dorsolaterally directed proximally, with a ventral curvature distally tapering to a point; parietosquamosal frill relatively short and broad (maximum width ,2 times maximum length), with small, caudally positioned parietal fenestrae; parietosquamosal frill with ten well developed processes on caudal margin composed on each side of three procurved epiparietals (ep1-3), one procurved process on the parietosquamosal contact (esp), and one laterally to rostrolaterally directed episquamosal (es1).
N. R. Longrich 2014Kosmoceratops distinguished by the following apomorphies: nasal horn quadrangular; very tall, narrow internal naris, premaxilla deflected ventrally (?).
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
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: terrestrialsubo
Locomotion: actively mobileo
Life habit: ground dwellingsubo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-15 11:08:09
Modified: 2005-09-15 13:08:09
Source: subo = suborder, o = order
References: Marsh 1875, Norman and Weishampel 1991

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

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian83.5 - 70.6USA (Utah) Chasmosaurinae indet. (type locality: 131868) Kosmoceratops richardsoni (97804)