Results 21 to 30 of about 695 (133)

Cranial growth and variation in edmontosaurs (Dinosauria: Hadrosauridae): implications for latest Cretaceous megaherbivore diversity in North America.

open access: yesPLoS ONE, 2011
The well-sampled Late Cretaceous fossil record of North America remains the only high-resolution dataset for evaluating patterns of dinosaur diversity leading up to the terminal Cretaceous extinction event.
Nicolás E Campione, David C Evans
doaj   +5 more sources

The dentary of hadrosauroid dinosaurs: evolution through heterochrony

open access: yesPalaeontology, Volume 66, Issue 5, September/October 2023., 2023
Abstract The near‐global distribution of hadrosaurid dinosaurs during the Cretaceous has been attributed to mastication, a behaviour commonly recognized as a mammalian adaptation. Its occurrence in a non‐mammalian lineage should be accompanied by the evolution of several morphological modifications associated with food acquisition and processing.
D. Fredrik K. Söderblom   +3 more
wiley   +1 more source

Calvarial suture interdigitation in hadrosaurids (Ornithischia: Ornithopoda): Perspectives through ontogeny and evolution

open access: yesEvolution &Development, Volume 25, Issue 3, Page 209-225, May 2023., 2023
We contrast the morphology of calvarial sutures through ontogeny and evolution in iguanodontian dinosaurs to test whether the evolution of cranial crests impacted the mechanical loading of the skull. We found that increased suture complexity coincided with crest evolution, and corresponding modifications to their skull altered stress distribution while
Thomas W. Dudgeon, David C. Evans
wiley   +1 more source

Description and etiology of paleopathological lesions in the type specimen of Parasaurolophus walkeri (Dinosauria: Hadrosauridae), with proposed reconstructions of the nuchal ligament

open access: yesJournal of Anatomy, Volume 238, Issue 5, Page 1055-1069, May 2021., 2021
The fossilized lesions in Parasaurolophus walkeri comprise periodontal disease, fractured ribs, and myositis ossificans traumatica in a number of vertebral dorsal spines and in the ilium. The injuries appear to have been caused by one or more non‐threatening events. The discoidal overgrowth on the dorsal spines m ight represent a pathological correlate
Filippo Bertozzo   +6 more
wiley   +1 more source

A juvenile cf. Edmontosaurus annectens (Ornithischia, Hadrosauridae) femur documents a poorly represented growth stage for this taxon

open access: yesVertebrate Anatomy, Morphology, Palaeontology, 2019
A nearly complete, but isolated, femur of a small hadrosaurid from the Hell Creek Formation of Montana is tentatively referred to Edmontosaurus annectens.
Andrew Farke, Eunice Yip
doaj   +3 more sources

Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods [PDF]

open access: yesZoological Journal of the Linnean Society, 2010
Prieto-Márquez, Albert (2010): Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods. Zoological Journal of the Linnean Society 159 (2): 435-502, DOI: 10.1111/j.1096-3642.2009.00617.x, URL: http://dx.doi.org/10.1111/j.1096-3642.2009.00617 ...
  +7 more sources

A new hadrosauroid dinosaur from the early late cretaceous of Shanxi Province, China. [PDF]

open access: yesPLoS ONE, 2013
BackgroundThe origin of hadrosaurid dinosaurs is far from clear, mainly due to the paucity of their early Late Cretaceous close relatives. Compared to numerous Early Cretaceous basal hadrosauroids, which are mainly from Eastern Asia, only six early Late ...
Run-Fu Wang   +7 more
doaj   +1 more source

First endocranial description of a South American hadrosaurid: The neuroanatomy of Secernosaurus koerneri from the Late Cretaceous of Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2018
The endocranial morphology of Secernosaurus koerneri (= Kritosaurus australis junior synonym), a hadrosaurid from the Upper Cretaceous of Argentina, was studied using latex and digital endocasts based on three fragmentary braincases.
Marcos G. Becerra   +3 more
doaj   +1 more source

A new Arctic hadrosaurid from the Prince Creek Formation (lower Maastrichtian) of northern Alaska [PDF]

open access: yesActa Palaeontologica Polonica, 2016
The Liscomb bonebed in the Price Creek Formation of northern Alaska has produced thousands of individual bones of a saurolophine hadrosaurid similar to Edmontosaurus; however, the specific identity of this taxon has been unclear, in part because the vast
Hirotsugu Mori   +2 more
doaj   +1 more source

Hadrosauridae Cope 1869

open access: yes, 2002
Published as part of Kenneth Carpenter & D. Bruce Young, 2002, Late Cretaceous dinosaurs from the Denver Basin, Colorado, pp. 237-254 in Rocky Mountain Geology 37 on page 246, DOI: 10.2113/gsrocky.37.2.237, http://zenodo.org/record ...
Kenneth Carpenter, D. Bruce Young
openaire   +3 more sources

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