Illuminating the dark mess of fibers: Application of circular cross polarized light in unravelling the bone tissue structure of the dermal pectoral girdle of Metoposaurus krasiejowensis [PDF]
Journal of Anatomy, Volume 247, Issue 3-4, Page 442-465, September/October 2025.Circular cross polarized light reveals the fine stucture of dermal bone tissue of a metoposaurid amphibian from the Late Triassic. Top right image shows the looped interwoven fibered bone when illuminated with circular polarized light displaying increased bone matrix intricacy compared to the same region of the bone when visualized with traditional ...
Sudipta Kalita +2 more
wiley +2 more sources
The world’s oldest cerapodan ornithischian dinosaur from the Middle Jurassic of Morocco [PDF]
Royal Society Open ScienceThe cerapodan dinosaurs were an ornithischian clade that achieved a global distribution in the Cretaceous Period. The ichnological record suggests that these dinosaurs had evolved by the Middle Jurassic, but only a single cerapodan body fossil, an ...
Susannah Maidment +7 more
doaj +2 more sources
An exceptionally preserved armored dinosaur reveals the morphology and allometry of osteoderms and their horny epidermal coverings [PDF]
PeerJ, 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
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]
PLoS 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]
PLoS 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
New perspectives on body size and shape evolution in dinosaurs [PDF]
Biological Reviews, Volume 100, Issue 5, Page 1829-1860, October 2025.ABSTRACT Diversity in the body shapes and sizes of dinosaurs was foundational to their widespread success during the Mesozoic era. The ability to quantify body size and form reliably is therefore critical to the study of dinosaur biology and evolution.
Matthew Dempsey +4 more
wiley +2 more sources
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 +4 more sources
Convoluted nasal passages function as efficient heat exchangers in ankylosaurs (Dinosauria: Ornithischia: Thyreophora) [PDF]
PLOS ONE, 2018 Convoluted nasal passages are an enigmatic hallmark of Ankylosauria. Previous research suggested that these convoluted nasal passages functioned as heat exchangers analogous to the respiratory turbinates of mammals and birds. We tested this hypothesis by performing a computational fluid dynamic analysis on the nasal passages of two ankylosaurs ...
Jason M. Bourke +2 more
openaire +4 more sources
Bizarre tail weaponry in a transitional ankylosaur from subantarctic Chile [PDF]
Nature, 2021 Abstract Armoured dinosaurs are well known for forms that evolved specialized tail weapons: paired tail spikes in stegosaurs, and heavy tail clubs in advanced ankylosaurs1. Armoured dinosaurs from southern Gondwana are rare and enigmatic, but likely include the earliest branches of Ankylosauria2-4.
Sergio Soto‐Acuña +18 more
openaire +4 more sources
Frontiers in Earth Science, 2022 Australian dinosaur research has undergone a renaissance in the last 10 years, with growing knowledge of mid-Cretaceous assemblages revealing an endemic high-paleolatitude Gondwanan fauna.
Timothy G. Frauenfelder +7 more
doaj +1 more source