Results 61 to 70 of about 2,665 (231)

Discrete and continuous character-based disparity analyses converge to the same macroevolutionary signa. A case study from captorhinids [PDF]

open access: yes, 2017
The relationship between diversity and disparity during the evolutionary history of a clade provides unique insights into evolutionary radiations and the biological response to bottlenecks and to extinctions.
Brocklehurst, Neil   +2 more
core   +2 more sources

Ontogenetic dietary shifts in North American hadrosaurids (Dinosauria: Ornithischia)

open access: hybridCretaceous Research, 2022
Taia Wyenberg-Henzler   +2 more
openalex   +2 more sources

The higher-level phylogeny of Archosauria (Tetrapoda:Diapsida) [PDF]

open access: yes, 2010
Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life.
Arcucci A.   +114 more
core   +1 more source

A new phylogeny of Stegosauria (Dinosauria, Ornithischia) [PDF]

open access: yesPalaeontology, 2017
The stegosaurs are some of the most easily recognizable dinosaurs, but are surprisingly rare as fossils. Consequently much remains unknown about their palaeobiology, and every new stegosaurian find contributes to our understanding of the evolution of the clade.
Raven, Tom, Maidment, Susannah
openaire   +3 more sources

Secondary cartilage revealed in a non-avian dinosaur embryo. [PDF]

open access: yesPLoS ONE, 2013
The skull and jaws of extant birds possess secondary cartilage, a tissue that arises after bone formation during embryonic development at articulations, ligamentous and muscular insertions.
Alida M Bailleul   +2 more
doaj   +1 more source

Dinosaurs in decline tens of millions of years before their final extinction [PDF]

open access: yes, 2016
Whether dinosaurs were in a long-term decline or whether they were reigning strong right up to their final disappearance at the Cretaceous–Paleogene (K-Pg) mass extinction event 66 Mya has been debated for decades with no clear resolution.
Chenet   +4 more
core   +1 more source

Sympatry of two ankylosaurs (Hungarosaurus and cf. Struthiosaurus) in the Santonian of Hungary [PDF]

open access: yes, 2013
A complete and well-preserved right ankylosaurian humerus from the Upper Cretaceous (Santonian) Csehbánya Formation of Iharkút, western Hungary is described here.
Prondvai, Edina, Ősi, Attila
core   +3 more sources

III.—Saurischia and Ornithischia [PDF]

open access: yesGeological Magazine, 1914
In 1888 the late Professor H. G. Seeley pointed out for the first time (Rep. Brit. Assoc. Adv. Sci., 1888, pp. 698–9) that Owens' order ‘Dinosauria’ should be divided into two great natural groups, especially on account of their pelvis. He called them Saurischia (=‘Theropoda’ + ‘Sauropoda’) and Ornithischia (=‘Orthopoda’).
openaire   +1 more source

Ornithopod diversity in the Griman Creek Formation (Cenomanian), New South Wales, Australia [PDF]

open access: yesPeerJ, 2018
During the Early Cretaceous, dinosaur communities of the Australian-Antarctic rift system (Eumeralla and Wonthaggi formations) cropping out in Victoria were apparently dominated by a diverse small-bodied ‘basal ornithopod’ fauna.
Phil R. Bell   +3 more
doaj   +2 more sources

Body mass estimates of an exceptionally complete Stegosaurus (Ornithischia: Thyreophora): comparing volumetric and linear bivariate mass estimation methods [PDF]

open access: yes, 2015
© 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. The file
Charlotte A. Brassey   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy