Results 41 to 50 of about 392 (145)

The most complete ankylosaur skull ever found in the Wessex Sub-basin (Lower Cretaceous) of the Isle of Wight.

open access: yes, 2017
Ankylosaur remains are frequently recovered from the Lower Cretaceous Wealden deposits of the Isle of Wight, although the vast majority of these fossils represent postcranial elements and osteoderms.
Stuart Pond
core   +1 more source

Tectonics, geology and origins of Te Riu‐a‐Māui / Zealandia

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 531-567, December 2025.
ABSTRACT Te Riu‐a‐Māui / Zealandia is a 95% submerged, five million square km southern hemisphere continent that includes the islands of New Zealand and New Caledonia. For the last 45 million years (Ma) Zealandia has been cut by the Pacific‐Australian plate boundary which today changes character from a west‐dipping subduction zone in the north to ...
Nick Mortimer
wiley   +1 more source

Review of the tetrapod skull–neck boundary: implications for the evolution of the atlas–axis complex

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2435-2470, December 2025.
ABSTRACT This review describes variation in modern and fossil occiput–atlas–axis complex anatomy of total group Tetrapoda with the aim of documenting the range of structural variation throughout their evolutionary history to establish grounds for comparison of the complex between tetrapod clades.
Dana E. Korneisel, Hillary C. Maddin
wiley   +1 more source

Supplementary Information 2 from Palaeopathological evidence for intraspecific combat in ankylosaurid dinosaurs

open access: yes, 2022
Dataset of ankylosaur morphological measurements, predator body sizes, and geological ages for taxa used in this ...
Victoria M. Arbour (14130577)   +2 more
core   +1 more source

Tunasniyoj, a dinosaur tracksite from the Jurassic-Cretaceous boundary of Bolivia

open access: yesAnais 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

Osteology and Taxonomy of British Wealden Supergroup (Berriasian–aptian) Ankylosaurs (Ornithischia, Ankylosauria)

open access: yesJournal 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

Intraskeletal histovariability and skeletochronology in an ornithopod dinosaur from the Maestrazgo Basin (Teruel, Spain)

open access: yesJournal 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

Skull morphology and histology indicate the presence of an unexpected buccal soft tissue structure in dinosaurs

open access: yesJournal 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

open access: yesJournal 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

open access: yesJournal 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

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