Results 41 to 50 of about 2,587 (228)
New Fossils of Stegosaurs from the Upper Jurassic of the Eastern Iberian Peninsula (Spain)
Diversity, 2022 The eastern Iberian Peninsula is one of the places with most stegosaur fossils in all of Europe. In the present study, we describe new remains from six different fossil sites from the Upper Jurassic of the Villar del Arzobispo Formation (Kimmeridgian ...
Sergio Sánchez-Fenollosa +2 more
doaj +1 more source
Internal vascularity of the dermal plates of Stegosaurus (Ornithischia, Thyreophora) [PDF]
Swiss Journal of Geosciences, 2010 X-ray computed tomography and petrographic thin sectioning were used to study internal features of the plates of the thyreophoran dinosaur Stegosaurus and the osteoderms of Alligator. Infrared thermographic imaging of basking caimans was used to examine possible differential blood flow to osteoderms and other parts of the skin.
James O. Farlow +2 more
openalex +3 more sources
The Anatomical Record, Volume 305, Issue 10, Page 2353-2414, October 2022., 2022 Abstract Once known solely from dental material and thought to represent an early ornithischian dinosaur, the early‐diverging pseudosuchian Revueltosaurus callenderi is described from a minimum of 12 skeletons from a monodominant bonebed in the upper part of the Chinle Formation of Arizona.
William G. Parker +7 more
wiley +1 more source
, 2018 Ornithischians The J/K interval decline in subsampled diversity remains constant and recognisable throughout publication history, with this stability suggesting a real biological signal and not a publication artefact (Tennant, Mannion & Upchurch, 2016b).
Jonathan P. Tennant +2 more
openaire +4 more sources
A reassessment of the purported ankylosaurian dinosaur Bienosaurus lufengensis from the Lower Lufeng Formation of Yunnan, China [PDF]
Acta Palaeontologica Polonica, 2019 The earliest definitive ornithischian dinosaurs are from the Early Jurassic and are rare components of early dinosaur faunas. The Lower Lufeng Formation (Hettangian–Sinemurian) of Yunnan Province, China, has yielded a diverse Early Jurassic terrestrial ...
Thomas J. Raven +3 more
doaj +1 more source
The Anatomical Record, Volume 305, Issue 10, Page 2766-2790, October 2022., 2022 Living crocodylians are 1 of only 3 groups of vertebrates that evolve an ossified secondary palate. We study the palatal anatomy of fossil crocodylians and its broader implications for the phylogenetics and palaeoecology of the group using micro‐CT data.
Kathleen N. Dollman, Jonah N. Choiniere
wiley +1 more source
Limb-Bone Scaling Indicates Diverse Stance and Gait in Quadrupedal Ornithischian Dinosaurs [PDF]
, 2012 Background The most primitive ornithischian dinosaurs were small bipeds, but quadrupedality evolved three times independently in the clade. The transition to quadrupedality from bipedal ancestors is rare in the history of terrestrial vertebrate ...
Barrett, PM +3 more
core +1 more source
The comparative energetics of the turtles and crocodiles
Ecology and Evolution, Volume 12, Issue 6, June 2022., 2022 This paper discusses patterns in Dynamic Energy Budget parameters and implied traits that we found for turtles and crocodiles. We explain, for instance, why the proportionality of weight at birth with the square root of ultimate weight points to problems with water loss and nitrogen‐waste accumulation.
Nina Marn, Sebastiaan A. L. M. Kooijman
wiley +1 more source
, 2022 Ornithischia Seeley, 1887 Ornithopoda Marsh, 1881 Iguanodontia Baur, 1891 sensu Madzia et al., 2018 Ankylopollexia Sereno, 1986 sensu Sereno, 1998 Styracosterna Sereno, 1997 sensu Sereno ...
Samathi, Adun, Suteethorn, Suravech
openaire +2 more sources
Femoral specializations to locomotor habits in early archosauriforms
Journal of Anatomy, Volume 240, Issue 5, Page 867-892, May 2022., 2022 We studied femoral shape variation by applying 3D geometric morphometrics to a large sample of archosauriforms predominantly from the Late Triassic. We identified a set of anatomical features varying with locomotor mode (quadrupedal/bipedal) or body size.
Romain Pintore +3 more
wiley +1 more source