Results 41 to 50 of about 226 (117)
Tunasniyoj, a dinosaur tracksite from the Jurassic-Cretaceous boundary of Bolivia
Anais da Academia Brasileira de Ciências, 2011 Here we report a superbly preserved and profusely represented five-ichnotaxa dinosaur track assemblage near Icla village, 100 km southeast of Sucre, Bolivia.
Sebastián Apesteguía, Pablo A. Gallina
doaj +1 more source
Journal of Anatomy, Volume 247, Issue 3-4, Page 643-664, September/October 2025.Abstract Ornithopods are an extinct group of dinosaurs that were particularly abundant and diverse in the Cretaceous of the Iberian Peninsula, and whose abundance in the Maestrazgo Basin has allowed numerous taxa to be identified over the last decade. Many of these fossil remains are still taxonomically indeterminate and require a more detailed study ...
Juan Maíllo +4 more
wiley +1 more source
Journal of Vertebrate Paleontology, 2020 Ankylosaurs, dinosaurs possessing extensive body armor, were significant components of terrestrial ecosystems from the Middle Jurassic–latest Cretaceous. They diversified during the Early Cretaceous, becoming globally widespread. The Lower Cretaceous Wealden Supergroup (Berriasian–Aptian) of Britain has produced abundant ankylosaur material, with three
Thomas J. Raven +3 more
openaire +1 more source
Journal of Anatomy, Volume 247, Issue 3-4, Page 790-818, September/October 2025.A combined approach of osteology and histology was used to examine the cheek regions of dinosaurs. Strong evidence was found for a soft tissue in this region connecting the zygoma to the mandible, here named the ‘exoparia’. Abstract Unlike mammals, reptiles typically lack large muscles and ligaments that connect the zygoma to the mandible.
Henry S. Sharpe +7 more
wiley +1 more source
Hidden Armour: The Passive Protective Function of Caudal Osteoderms in Snakes
Journal of Morphology, Volume 286, Issue 2, February 2025.Well‐developed caudal osteoderms were discovered in shield‐tailed snakes (Uropeltidae). Dermal armour at the tail tip likely provides passive protection against predators, though roles in locomotion or phragmosis cannot be excluded. Our findings emphasise the functional and evolutionary versatility of osteoderms and highlight the need for further ...
Petra Frýdlová +5 more
wiley +1 more source
Review of osteoderm function and future research directions
Journal of Zoology, Volume 325, Issue 1, Page 1-24, January 2025.Osteoderms are bone plates in the skin that occur in virtually all major tetrapod clades. Much has been speculated about their function, but many questions remain unanswered. This review provides an overview of the current state of knowledge and future research directions in this field.
R. Ebel +3 more
wiley +1 more source
The Anatomical Record, Volume 307, Issue 12, Page 3685-3716, December 2024.Abstract Recent years have seen increasing scientific interest in whether neuron counts can act as correlates of diverse biological phenomena. Lately, Herculano‐Houzel (2023) argued that fossil endocasts and comparative neurological data from extant sauropsids allow to reconstruct telencephalic neuron counts in Mesozoic dinosaurs and pterosaurs, which ...
Kai R. Caspar +10 more
wiley +1 more source
Wear Pattern, Dental Function, and Jaw Mechanism in the Late Cretaceous Ankylosaur Hungarosaurus [PDF]
The Anatomical Record, 2014 ABSTRACTFeeding in thyreophoran dinosaurs is poorly understood. Although the group existed for over 130 million years, only the Early Jurassic basal thyreophoran Scelidosaurus harrisonii and the Late Cretaceous ankylosaurid Euoplocephalus tutus have been studied from this perspective in detail.
Ősi, Attila +3 more
openaire +3 more sources
Papers in Palaeontology, Volume 10, Issue 6, November/December 2024.Abstract The Lower Cretaceous Wealden Supergroup of southern England yields a diverse assemblage of theropod dinosaurs, its taxa being represented by fragments in addition to some of the most informative associated skeletons of the European Mesozoic. Spinosaurids, neovenatorid allosauroids, tyrannosauroids and dromaeosaurids are among reported Wealden ...
Chris T. Barker +7 more
wiley +1 more source
Multiscale Mineralization in the Leopard Gecko Eggshell
Advanced Functional Materials, Volume 34, Issue 24, June 12, 2024.This work presents a 3D investigation of macro‐to‐nanoscale ultrastructure in the leopard gecko eggshell. Diverse structures of hierarchical calcite biomineral exist across five unique levels (rosette, scute, corolla, nanosphere, and nanodomain), integrating with an array of organic fibers to form an eggshell assembly remarkably different from avian ...
Joseph Deering +2 more
wiley +1 more source