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Hypacrosaurus stebingeri

Reptilia - Hadrosauridae

Taxonomy
Hypacrosaurus stebingeri was named by Horner and Currie (1994). Its type specimen is MOR 549, a skull, and it is a 3D body fossil. Its type locality is Badger Creek, MOR TM-065/065S, which is in a Campanian terrestrial mudstone in the Two Medicine Formation of Montana.

Synonymy list
YearName and author
1994Hypacrosaurus stebingeri Horner and Currie p. 333
1996Hypacrosaurus stebingeri Molnar p. 650
1996Hypacrosaurus stebingeri Zelenitsky et al. p. 1655
1997Hypacrosaurus stebingeri Coy p. 168
2001Hypacrosaurus stebingeri Eberth et al. p. 57
2001Hypacrosaurus stebingeri Horner et al. p. 9
2001Hypacrosaurus stebingeri Trexler p. 303
2004Hypacrosaurus stebingeri Horner et al. p. 441
2006Hypacrosaurus stebingeri Currie et al. p. 16R
2006Hypacrosaurus stebingeri Lund and Gates p. 272
2006Hypacrosaurus stebingeri Prieto-Márquez et al. p. 937
2007Hypacrosaurus stebingeri Evans and Reisz p. 385
2007Hypacrosaurus stebingeri Gates et al. p. 919
2008Hypacrosaurus stebingeri Cooper et al.
2009Hypacrosaurus stebingeri Evans et al. p. 1316
2009Hypacrosaurus stebingeri Gates and Farke p. 1162
2009Hypacrosaurus stebingeri Guenther p. 1428
2009Hypacrosaurus stebingeri Horner et al. p. 743
2010Hypacrosaurus stebingeri Evans p. 398
2010Hypacrosaurus stebingeri Gates et al. p. 168
2010Hypacrosaurus stebingeri Miyashita et al. p. 88
2010Hypacrosaurus stebingeri Prieto-Marquez p. 845
2010Hypacrosaurus stebingeri Prieto-Marquez and Salinas p. 835 fig. 20
2010Hypacrosaurus stebingeri Prieto-Márquez p. 5 fig. 2
2010Hypacrosaurus stebingeri Prieto-Márquez and Norell p. 21
2010Hypacrosaurus stebingeri Prieto-Márquez and Wagner p. 1243 fig. 3
2010Hypacrosaurus stebingeri Reisz et al. p. 1664
2011Hypacrosaurus stebingeri Brink et al. p. 63
2011Hypacrosaurus stebingeri Prieto-Márquez p. 62
2011Hypacrosaurus stebingeri Sullivan et al. p. 417
2012Hypacrosaurus stebingeri Godefroit et al. p. 532
2012Hypacrosaurus stebingeri Prieto-Marquez et al. p. 7
2012Hypacrosaurus stebingeri Ramírez-Velasco et al. p. 392
2013Hypacrosaurus sternbergi Araújo et al. p. 6
2013Hypacrosaurus stebingeri Bailleul et al. p. 1
2013Hypacrosaurus stebingeri Bell and Brink p. 265
2013Hypacrosaurus stebingeri Cruzado-Caballero et al.
2013Hypacrosaurus stebingeri Farke et al. p. 22
2014Hypacrosaurus stebingeri Bolotsky et al. p. 323
2014Hypacrosaurus stebingeri Brink et al. p. 248
2014Hypacrosaurus stebingeri Gates et al. p. 159
2014Hypacrosaurus stebingeri Prieto-Márquez p. 296
2015Hypacrosaurus stebingeri Evans et al. p. 643
2015Hypacrosaurus stebingeri Tan et al. p. 249
2016Hypacrosaurus stebingeri Fanti et al. p. 270
2016Hypacrosaurus stebingeri Prieto-Márquez and Gutarra p. 144
2017Hypacrosaurus stebingeri Cruzado-Caballero and Powell p. 4
2019Hypacrosaurus stebingeri Takasaki et al. p. 2
2020Hypacrosaurus stebingeri Bailleul et al. p. 815
2021Hypacrosaurus stebingeri Gates et al. p. 16
2021Hypacrosaurus stebingeri Holland et al. p. 11
2021Hypacrosaurus stebingeri Kobayashi 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()
—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
subfamilyLambeosaurinae
tribeCorythosauriniGlut 1997
genusHypacrosaurus
speciesstebingeri

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.

†Hypacrosaurus stebingeri Horner and Currie 1994
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Diagnosis
ReferenceDiagnosis
K. S. Brink et al. 2014Lambeosaurine hadrosaurid dinosaur characterized by a cranial crest comprised predominantly of the caudolateral process of the premaxilla in lateral view that is elongate and lingulate in shape. The caudolateral process contribution to the crest is longer than tall, with a slightly convex dorsal margin. It differs from Corythosaurus in that the caudolateral process of premaxilla is not divided into distinct cranial and rostral lobes. It differs from Lambeosaurus in the following features: sloping facial profile with apex of crest above orbit; caudal margin of crest formed predominantly by nasal; nasal with rostral bifurcation; caudodorsal process of premaxilla without accessory rostroventral flange overlapping the lateral surface of nasal in rostral region of crest; incomplete enclosure of ophthalmic canal. It differs from H. altispinus in the following features: external nares elongate; postorbital bifurcate; jugal with rounded ventral flange; nasal bifurcation is more pronounced in juveniles; caudolateral process of premaxilla lingulate, forming majority of cranial crest in lateral view in adult specimens.
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: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-08-25 05:53:01
Modified: 2005-08-25 07:53:01
Source: g = genus, subo = suborder, o = order
References: Marsh 1875, Peczkis 1995, Benton 1983

Age range: base of the Late/Upper Campanian to the top of the Campanian or 83.50000 to 72.10000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.1USA (Montana) Hypacrosaurus sp. (22689) Hypacrosaurus stebingeri (53042 53043 53044 53045 53046 53047 53048 type locality: 53052 59373 220335) Lambeosaurinae indet. (53996) Lambeosaurus sp. (22690) Procheneosaurus erectofrons (70051)
Campanian83.6 - 72.1Canada (Alberta) Hypacrosaurus stebingeri (53051)
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Hypacrosaurus stebingeri (53049 53050)