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Probrachylophosaurus bergei

Reptilia - Hadrosauridae

Taxonomy
Probrachylophosaurus bergei was named by Freedman Fowler and Horner (2015). Its type specimen is MOR 2919, a skeleton (majority of a skull and skeleton, disarticulated. Cranial material includes a right premaxilla (fragmentary), both maxillae, left jugal, partial right lacrimal,), and it is a 3D body fossil. Its type locality is MOR locality JR-518, Kennedy Coulee, which is in a Campanian/Campanian terrestrial mudstone in the Judith River Formation of Montana.

Synonymy list
YearName and author
2015Probrachylophosaurus bergei Freedman Fowler and Horner
2021Probrachylophosaurus bergei McDonald et al. p. 2

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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
genusProbrachylophosaurus
speciesbergei

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.

†Probrachylophosaurus bergei Freedman Fowler and Horner 2015
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Diagnosis
ReferenceDiagnosis
E. A. Freedman Fowler and J. R. Horner 2015Probrachylophosaurus bergei is a hadrosaurine hadrosaurid diagnosed by the following features: solid crest consisting entirely of the nasals that overhangs the supratemporal fenestrae by less than 2 cm in adults; nasal crest being extremely dorsoventrally thickened medially, resulting in a strongly triangular frontal plane cross section, with the dorsal angle formed by the paired nasals in posterior view being less than 130 degrees. These autapomorphies, together with the following traits, form a unique combination of characters: posterior lacrimal mediolaterally wide as in Acristavus but not Brachylophosaurus, caudoventral apex of the rostral process of the jugal is posterior to the caudodorsal apex as in Acristavus but not Brachylophosaurus, squamosals contact each other medially as in Acristavus but not Brachylophosaurus, posteriorly-oriented solid nasal crest as in Brachylophosaurus but not Acristavus.
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: base of the Middle Campanian to the top of the Late/Upper Campanian or 83.60000 to 72.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Campanian - Late/Upper Campanian83.6 - 72.2USA (Montana) Probrachylophosaurus bergei (type locality: 194654)