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Brachylophosaurus canadensis

Reptilia - Hadrosauridae

Taxonomy
Brachylophosaurus canadensis was named by Sternberg (1953). Its type specimen is NMC 8893, a partial skeleton, and it is a 3D body fossil. Its type locality is RTMP Quarry 103, 0.5 miles above mouth of Sand Creek (60 ft level), which is in a Campanian terrestrial sandstone in the Oldman Formation of Canada.

It was considered a nomen dubium by Dalla Vecchia (2014).

Synonyms
Synonymy list
YearName and author
1953Brachylophosaurus canadensis Sternberg
1964Brachylophosaurus canadensis Kuhn p. 15
1964Brachylophosaurus canadensis Russell p. 12
1964Brachylophosaurus canadensis Tatarinov p. 565
1966Brachylophosaurus canadensis Russell p. 25
1983Brachylophosaurus canadensis Weishampel and Weishampel p. 44
1988Brachylophosaurus canadensis Horner p. 315
1988Brachylophosaurus goodwini Horner p. 315 fig. 1
1990Brachylophosaurus canadensis Weishampel and Horner p. 556
1990Brachylophosaurus goodwini Weishampel and Horner p. 556
1992Brachylophosaurus goodwini Horner p. 15
1998Brachylophosaurus canadensis Godefroit et al. p. 50
2001Brachylophosaurus canadensis Horner et al. p. 10
2004Brachylophosaurus canadensis Horner et al. p. 439
2005Brachylophosaurus canadensis Currie p. 4
2005Brachylophosaurus canadensis Cuthbertson p. 49A
2005Brachylophosaurus canadensis Prieto-Márquez pp. 144-145
2005Brachylophosaurus canadensis Ryan and Evans p. 332
2006Brachylophosaurus canadensis Kirkland et al. p. 311 fig. 13
2006Brachylophosaurus canadensis Lund and Gates p. 271
2006Brachylophosaurus canadensis Prieto-Márquez et al. p. 937
2009Brachylophosaurus canadensis Dalla Vecchia p. 5
2009Brachylophosaurus canadensis Guenther p. 1429
2009Brachylophosaurus canadiensis Wagner and Lehman p. 606
2010Brachylophosaurus canadensis McDonald et al. p. 808 fig. 10
2010Brachylophosaurus canadensis Prieto-Marquez p. 845
2010Brachylophosaurus canadensis Prieto-Marquez and Salinas p. 819
2010Brachylophosaurus canadensis Prieto-Márquez p. 3
2010Brachylophosaurus canadensis Prieto-Márquez and Norell p. 6
2010Brachylophosaurus canadensis Prieto-Márquez and Wagner p. 1241
2011Brachylophosaurus canadensis Eberth and Evans p. 18
2011Brachylophosaurus canadensis Prieto-Márquez p. 62
2012Brachylophosaurus canadensis Bell p. 9
2012Brachylophosaurus canadensis Godefroit et al. p. 3
2012Brachylophosaurus canadensis Prieto-Márquez p. 518
2012Brachylophosaurus canadensis Ramírez-Velasco et al. p. 389
2013Brachylophosaurus canadensis Armitage and Anderson p. 603
2013Brachylophosaurus canadensis Murphy et al. p. 279
2013Brachylophosaurus canadensis Prieto-Marquez
2014Brachylophosaurus canadensis Bell p. 573
2014Brachylophosaurus canadensis Bell et al. p. 177
2014Brachylophosaurus canadensis Campione p. 208
2014Brachylophosaurus canadensis Gates et al. p. 156
2014Brachylophosaurus canadensis Tsogtbaatar et al. p. 116
2014Brachylophosaurus canadensis Xing et al. p. 1816
2015Brachylophosaurus canadensis Evans et al. p. 643
2015Brachylophosaurus canadensis Ohashi et al. p. 4
2015Brachylophosaurus canadensis Tan et al. p. 254
2016Brachylophosaurus canadensis Fondevilla et al. p. 396
2016Brachylophosaurus canadensis Lehman et al. p. 350
2016Brachylophosaurus canadensis Mallon et al. p. 33
2016Brachylophosaurus canadensis Prieto-Márquez et al. p. 10
2017Brachylophosaurus canadensis Bertozzo et al. p. 17
2017Brachylophosaurus canadensis Cruzado-Caballero and Powell p. 5
2018Brachylophosaurus canadensis Fondevilla et al. p. 8
2018Brachylophosaurus canadensis Gates et al. p. 16
2019Brachylophosaurus canadensis Drysdale et al. p. 15
2020Brachylophosaurus canadensis Dalla Vecchia p. 611
2021Brachylophosaurus canadensis Holland et al. p. 16
2021Brachylophosaurus canadensis Kobayashi et al. p. 6
2021Brachylophosaurus canadensis McDonald et al. p. 2
2022Brachylophosaurus canadensis Son et al. p. 19

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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
subfamilyHadrosaurinaeLambe 1918
—Brachylophosaurini
genusBrachylophosaurus
speciescanadensis

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.

†Brachylophosaurus canadensis Sternberg 1953
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Invalid names: Brachylophosaurus goodwini Horner 1988 [synonym]
Diagnosis
ReferenceDiagnosis
J. R. Horner 1988 (Brachylophosaurus goodwini)Deep and rounded dorsal depression or pit at or near the junction of the frontal and postorbital; dorsally concave upper process of nasal; posterolateral surface of nasal reaching orbital rim; quadratojugal process of the jugal parallel with postorbital process.
A. Prieto-Márquez et al. 2006Brachylophosaurus canadensis is rediagnosed on the basis of the following autapomorphies: nasals greatly developed into paddle-like solid crest extending caudodorsally, overhanging dorsal region of skull; nasals possessing anteroposteriorly oriented groove terminating in elongated foramen, located medial to prefrontal; prefrontal projected posteriorly, resting dorsomedially over anterior process of postorbital and, more posteriorly, extending ventromedially, underlying nasal; only anterior sharp tip of lacrimal contacting maxilla; jugal with ventrally projected semicircular flange deeper overall than that of M. peeblesorum but more lightly built than in remaining hadrosaurines; extremely elongated, rod-like anterodorsal process of maxilla projecting medial to narial cavity along most of anteroposterior length of external naris; anteroposteriorly short exoccipital-supraoccipital roof posterior and dorsal to foramen magnum.
A. Prieto-Marquez 2013Generic and Specific Characters. Skull (side view) high in front, subrectangular, medium breadth; premaxillae high; beak subrectangular in outline, down-turned in front, not reflected; nasal orifice oval, relatively high, no depressed area for nasal organ; nasal parallel to tooth row, extending back over the frontals to form a Saurolophus-like crest overhanging the parietals; frontals short, mid-portion covered by nasals but outer tip forming part of orbital rim; occipital region narrow, slightly overhanging occipital condyle; paroccipital process of exoccipital heavy and long; maxilla relatively high in front with long anterior maxillary process fitting in groove in premiaxilla; lachrymal large, triangular, with tip extending far forward; jugal slender, posterior part narrow and strongly upturned; orbit high; lateral temporal fossa about three times as high as wide; quadrate moderately long and slightly curved; prevomer subtriangular, much longer than high, very thin; dentary moderately high, edentulous portion equal to about half the length of the tooth magazine, upper edge carries forward at about same level as triturating surface then turns down
very sharply; enamel face of dentary teeth about three times as high as broad, lingual-buccal diameter greater than fore-and-aft breadth; vertical rows of teeth inore numerous in the maxilla (about 49) than in the dentary (about 39) ; skeleton massive; cervical vertebrae low and broad; anterior dorsals with neural spines of moderate height but great fore-and-aft diameter; forearm very long.
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: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: subo = suborder, o = order
References: Marsh 1875, Benton 1983

Age range: Middle Campanian or 83.60000 to 72.20000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.2USA (Montana) Maiasaura sp. (53146)
Late/Upper Campanian83.6 - 72.2Canada (Alberta) Brachylophosaurus canadensis (162171) Gryposaurus sp. (type locality: 59041)
Middle Campanian83.6 - 72.2USA (Montana) Brachylophosaurus canadensis (73891 167804) Brachylophosaurus goodwini (26779 227264) Hadrosauridae indet. (69281)