Project 2157: E. A. Freedman Fowler, M. Friedman, 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.
Specimen: † Probrachylophosaurus bergei (MOR/2919:MOR 2919)

Abstract

Brachylophosaurini is a clade of hadrosaurine dinosaurs currently known from the Campanian (Late Cretaceous) of North America. Its members include: Acristavus gagslarsoni, which lacks a nasal crest; Brachylophosaurus canadensis, which possesses a flat paddle-shaped nasal crest projecting posteriorly over the dorsal skull roof; and Maiasaura peeblesorum, which possesses a dorsally-projecting nasofrontal crest. Acristavus, from the lower Two Medicine Formation of Montana (~81–80 Ma), is hypothesized to be the ancestral member of the clade. Brachylophosaurus specimens are from the middle Oldman Formation of Alberta and equivalent beds in the Judith River Formation of Montana; the upper Oldman Formation is dated 77.8 Ma.


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Article DOI: 10.1371/journal.pone.0141304

Project DOI: 10.7934/P2157, http://dx.doi.org/10.7934/P2157
This project contains
  • 3 Media
  • 1 Taxon
  • 1 Specimen
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MorphoBank Project 2157

    Authors' Institutions

    • Montana State University

    • Museum of the Rockies



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    notes
    Elizabeth Freedman Fowler
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