Results 11 to 20 of about 204 (109)

Analyzing taphonomic deformation of ankylosaur skulls using retrodeformation and finite element analysis. [PDF]

open access: yesPLoS ONE, 2012
Taphonomic deformation can make the interpretation of vertebrate fossil morphology difficult. The effects of taphonomic deformation are investigated in two ankylosaurid dinosaur taxa, Euoplocephalus tutus (to investigate effects on our understanding of ...
Victoria M Arbour, Philip J Currie
doaj   +6 more sources

A new nodosaurid ankylosaur (Dinosauria: Thyreophora) from the Upper Cretaceous Menefee Formation of New Mexico [PDF]

open access: yesPeerJ, 2018
Nodosauridae is a clade of armored dinosaurs with a rich fossil record and long history of study in North America. Nodosaurid fossils have been collected throughout the western United States and Canada. Here, we report three new nodosaurid specimens from
Andrew T. McDonald, Douglas G. Wolfe
doaj   +5 more sources

Long bone histology and growth patterns in ankylosaurs: implications for life history and evolution. [PDF]

open access: yesPLoS ONE, 2013
The ankylosaurs are one of the major dinosaur groups and are characterized by unique body armor. Previous studies on other dinosaur taxa have revealed growth patterns, life history and evolutionary mechanisms based on their long bone histology.
Martina Stein   +2 more
doaj   +5 more sources

Pelvis of gargoyleosaurus (Dinosauria: Ankylosauria) and the origin and evolution of the ankylosaur pelvis. [PDF]

open access: yesPLoS ONE, 2013
Discovery of a pelvis attributed to the Late Jurassic armor-plated dinosaur Gargoyleosaurus sheds new light on the origin of the peculiar non-vertical, broad, flaring pelvis of ankylosaurs.
Kenneth Carpenter   +3 more
doaj   +5 more sources

Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris [PDF]

open access: yesFACETS, 2017
Ankylosaurus magniventris is an iconic dinosaur species often depicted in popular media. It is known from relatively fragmentary remains compared with its earlier and smaller relatives such as Euoplocephalus and Anodontosaurus.
Victoria M. Arbour, Jordan C. Mallon
doaj   +4 more sources

The basal nodosaurid ankylosaur Europelta carbonensis n. gen., n. sp. from the Lower Cretaceous (lower Albian) Escucha Formation of northeastern Spain. [PDF]

open access: yesPLoS ONE, 2013
Nodosaurids are poorly known from the Lower Cretaceous of Europe. Two associated ankylosaur skeletons excavated from the lower Albian carbonaceous member of the Escucha Formation near Ariño in northeastern Teruel, Spain reveal nearly all the diagnostic ...
James I Kirkland   +5 more
doaj   +2 more sources

The functional and palaeoecological implications of tooth morphology and wear for the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. [PDF]

open access: yesPLoS ONE, 2014
Megaherbivorous dinosaurs were exceptionally diverse on the Late Cretaceous island continent of Laramidia, and a growing body of evidence suggests that this diversity was facilitated by dietary niche partitioning. We test this hypothesis using the fossil
Jordan C Mallon, Jason S Anderson
doaj   +2 more sources

Endocranial Morphology of the Primitive Nodosaurid Dinosaur Pawpawsaurus campbelli from the Early Cretaceous of North America. [PDF]

open access: yesPLoS ONE, 2016
BackgroundAnkylosaurs are one of the least explored clades of dinosaurs regarding endocranial anatomy, with few available descriptions of braincase anatomy and even less information on brain and inner ear morphologies.
Ariana Paulina-Carabajal   +2 more
doaj   +2 more sources

An exceptionally preserved armored dinosaur reveals the morphology and allometry of osteoderms and their horny epidermal coverings [PDF]

open access: yesPeerJ, 2017
Although the evolution and function of “exaggerated” bony projections in ornithischian dinosaurs has been subject to significant debate recently, our understanding of the structure and morphology of their epidermal keratinized coverings is greatly ...
Caleb M. Brown
doaj   +3 more sources

Microstructure and development of the dermal ossicles of Antarctopelta oliveroi (Dinosauria, Ankylosauria): A complex morphogenetic system deciphered through three-dimensional X-ray microtomography. [PDF]

open access: yesJ Anat
Series of images of the dermal ossicle of Antarctopelta oliveroi (Dinosauria, Ankylosauria) illustrating (A) the 3D distribution of the vascular mesh in the ossicle; (B) the large volume of the numerous cells in periphery; (C) the radial orientation of the fiber bundles in the main core of the osteoderm (called basal plate); (D) the orthogonal ...
Sanchez S   +4 more
europepmc   +2 more sources

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