Unranked clade

Valid Extinct

Brachylophosaurini

Gates et al. 2011

Saurolophinae is a subfamily of hadrosaurid dinosaurs. It has since the mid-20th century generally been called the Hadrosaurinae, a group of largely non-crested hadrosaurs related to the crested sub-family Lambeosaurinae. However, the name Hadrosaurinae is based on the genus Hadrosaurus which was found in more recent studies to be more primitive than either lambeosaurines or other traditional "hadrosaurines", like Edmontosaurus and Saurolophus. As a result of this, the name Hadrosaurinae was dropped or restricted to Hadrosaurus alone, and the subfamily comprising the traditional "hadrosaurines" was renamed the Saurolophinae. Recent phylogenetic work by Hai Xing indicates that Hadrosaurus is placed within the monophyletic group containing all non-lambeosaurine hadrosaurids. Under this view, the traditional Hadrosaurinae is resurrected, with the Hadrosauridae being divided into two clades: Hadrosaurinae and Lambeosaurinae.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Dinosaures

Herbivore Ground dwelling, gregarious Terrestrial

click to enlarge

Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2] ↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7 ↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22 © Kevin Walsh from Bicester, England · CC BY 2.0 · Wikimedia

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Unranked clade

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Ornithischia Unranked clade

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Neornithischia Unranked clade

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Pyrodontia Unranked clade

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Cerapoda Unranked clade

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Ornithopoda Suborder

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Iguanodontia Infraorder

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Euiguanodontia Unranked clade

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Dryomorpha Unranked clade

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Ankylopollexia Unranked clade

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Styracosterna Unranked clade

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Hadrosauriformes Unranked clade

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Hadrosauroidea Unranked clade

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Hadrosauridae Family

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Hadrosaurinae Subfamily

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Brachylophosaurini Unranked clade

Fossil sites 29 geolocated sites

Distribution

Top countries

🇺🇸 United States

🇨🇦 Canada

🇰🇿 Kazakhstan

🇨🇳 China

Geological formations

Two Medicine

Judith River

Oldman

Eutaw

Claggett

Marshalltown

Menefee

Wahweap

Woodbury

Navesink

Temporal distribution

Maastrichtian (72.2–66 Ma)

Campanian (83.6–72.2 Ma)

Images 1

Bibliography

Original description

T. A. Gates, J. R. Horner, and R. R. Hanna, C. R. Nelson. 2011. New unadorned hadrosaurine hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America. Journal of Vertebrate Paleontology 31(4):798-811 DOI ↗

Bibliography (26)

R. R. Rogers, J. R. Horner, and J. Ramezani, E. M. Roberts, D. J. Varricchio. 2024. Updating the Upper Cretaceous (Campanian) Two Medicine Formation of Montana: lithostratigraphic revisions, new CA-ID-TIMS U-Pb ages, and a calibrated framework for dinosaur occurrences. GSA Bulletin DOI ↗

A. T. McDonald, D. G. Wolfe, and E. A. Freedman Fowler, T. A. Gates. 2021. A new brachylophosaurin (Dinosauria: Hadrosauridae) from the Upper Cretaceous Menefee Formation of New Mexico. PeerJ 9:e11084:1-28 DOI ↗

E. A. Freedman Fowler and J. R. Horner. 2015. A new brachylophosaurin hadrosaur (Dinosauria: Ornithischia) with an intermediate nasal crest from the Campanian Judith River Formation of northcentral Montana. PLoS One 10(11):e0141304 DOI ↗

J. G. Schmitt, F. D. Jackson, and R. R. Hanna. 2014. Debris flow origin of an unusual Late Cretaceous hadrosaur bonebed in the Two Medicine Formation of western Montana. Hadrosaurs

N. L. Murphy, K. Carpenter, and D. Trexler. 2013. New evidence for predation by a large tyrannosaurid. Tyrannosaurid Paleobiology

P. Godefroit, S. Hai, and T. Yu, P. Lauters. 2008. New hadrosaurid dinosaurs from the uppermost Cretaceous of northeastern China. Acta Palaeontologica Polonica 53(1):47-74 DOI ↗

N. L. Murphy, D. Trexler, and M. Thompson. 2002. Exceptional soft-tissue preservation in a mummified ornithopod dinosaur from the Campanian Judith River Formation. Journal of Vertebrate Paleontology 22(3 (suppl.)):91A

J. R. Horner, J. G. Schmitt, and F. Jackson, R. Hanna. 2001. Bones and rocks of the Upper Cretaceous Two Medicine-Judith River clastic wedge complex, Montana. In C. L. Hill (ed), Society of Vertebrate Paleontology, 61st Annual Meeting, Bozeman. Guidebook for the Field Trips: Mesozoic and Cenozoic Paleontology in the Western Plains and Rocky Mountains, Museum of the Rockies Occasional Paper 3:3-13

M. J. Ryan and A. P. Russell. 2001. Dinosaurs of Alberta (exclusive of Aves). Mesozoic Vertebrate Life

D. A. Burnham, K. L. Derstler, and P. J. Currie, R. T. Bakker, Z. Zhou, J. H. Ostrom. 2000. Remarkable new birdlike dinosaur (Theropoda: Maniraptora) from the Upper Cretaceous of Montana. University of Kansas Paleontological Contributions 13:1-14

A. Prieto-Marquéz. 2000. On the postcrania of Brachylophosaurus goodwini (Dinosauria: Ornithopoda): implications for hadrosaur morphology. Journal of Vertebrate Paleontology 20(3 (suppl.)):63A

L. A. Nessov. 1995. Dinozavri severnoi Yevrazii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii [Dinosaurs of northern Eurasia: new data about assemblages, ecology, and paleobiogeography]. Institute for Scientific Research on the Earth's Crust, St. Petersburg State University, St. Petersburg

W. B. Gallagher. 1993. The Cretaceous/Tertiary mass extinction event in the North Atlantic coastal plain. The Mosasaur 5:75-154

D. J. Varricchio. 1993. Taphonomy of Jack's Birthday site, a diverse dinosaur bone bed. Journal of Vertebrate Paleontology 13(3, suppl.):61A

B. S. Grandstaff, D. C. Parris, and R. K. Denton, Jr, W. B. Gallagher. 1992. Alphadon (Marsupialia) and Multituberculata (Allotheria) in the Cretaceous of eastern North America. Journal of Vertebrate Paleontology 12(2):217-222 DOI ↗

K. F. Hirsch and B. Quinn. 1990. Eggs and eggshell fragments from the Upper Cretaceous Two Medicine Formation of Montana. Journal of Vertebrate Paleontology 10(4):491-511 DOI ↗

J. R. Horner. 1988. A new hadrosaur (Reptilia, Ornithischia) from the Upper Cretaceous Judith River Formation of Montana. Journal of Vertebrate Paleontology 8(3):314-321 DOI ↗

W. B. Gallagher, D. C. Parris, and E. E. Spamer. 1986. Paleontology, biostratigraphy, and depositional environments of the Cretaceous-Tertiary transition in the New Jersey coastal plain. The Mosasaur 3:1-35

P. J. Currie. 1980. Mesozoic vertebrate life in Alberta and British Columbia. Mesozoic Vertebrate Life 1:27-40

J. R. Horner and R. Makela. 1979. Nest of juveniles provides evidence of family structure among dinosaurs. Nature 282:296-298 DOI ↗

H. W. Miller. 1966. Cretaceous vertebrate fauna from Phoebus Landing, North Carolina. The Journal of the Elisha Mitchell Scientific Society 82(2):93

C. M. Sternberg. 1953. A mew hadrosaur from the Oldman Formation of Alberta: discussion of nomenclature. National Museum of Canada Bulletin 128:1-12

E. D. Cope. 1875. On the transition beds of the Saskatchewan district. Proceedings of the Academy of Natural Sciences of Philadelphia 27:2-3

J. Leidy. 1866. [The specimen of a large phalanx of an extinct reptile]. Proceedings of the Academy of Natural Sciences of Philadelphia 1866:9

J. Leidy. 1858. [On the bones of a huge herbivorous saurian near Haddonfield]. Proceedings of the Academy of Natural Sciences of Philadelphia 10:215-218

Brachylophosaurini

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