Microstructure and development of the dermal ossicles of Antarctopelta oliveroi (Dinosauria, Ankylosauria): A complex morphogenetic system deciphered through three-dimensional X-ray microtomography. [PDF]
J AnatAbstractAnkylosaurs were a group of heavily armored non‐avian dinosaurs (Dinosauria, Ankylosauria), represented by a relatively abundant fossil record from the Cretaceous of North and South America. Their dermal skeleton was characterized by large osteoderms whose development and functional role have been largely investigated.
Sanchez S +4 more
europepmc +4 more sources
First Valanginian Polacanthus foxii (Dinosauria, Ankylosauria) from England, from the Lower Cretaceous of Bexhill, Sussex [PDF]
Proceedings of the Geologists' Association, 2014 A new partial skeleton of the armoured ornithischian dinosaur Polacanthus found in the Wadhurst Clay Formation (Valanginian stage) of Bexhill, Sussex is the oldest recorded occurrence of this taxon. Previous discoveries suggested that at least two armoured ornithischians occur in the Wealden succession: Polacanthus, which was mostly restricted to the ...
Blows, W., Honeysett, K.
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Notice of nodosaur (Dinosauria, Ankylosauria) remains from the mid-Cretaceous of Cambridge, England, with comments on cervical half-ring armour [PDF]
Proceedings of the Geologists' Association, 2014 Three pieces from cervical half-rings of an immature nodosaur, part of a nodosaurid presacral rod and some post-cranial osteoderms from the Cretaceous of Cambridge were studied at the Booth Museum of Natural History, Brighton, UK. Two of the three half-ring elements show dorsal ridge morphologies distinct from each other, and all three have unfused ...
Blows +28 more
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Long bone histology and growth patterns in ankylosaurs: implications for life history and evolution. [PDF]
PLoS ONE, 2013 The ankylosaurs are one of the major dinosaur groups and are characterized by unique body armor. Previous studies on other dinosaur taxa have revealed growth patterns, life history and evolutionary mechanisms based on their long bone histology.
Martina Stein +2 more
doaj +2 more sources
A new ankylosaurine dinosaur from the Judith River Formation of Montana, USA, based on an exceptional skeleton with soft tissue preservation [PDF]
Royal Society Open Science, 2017 The terrestrial Judith River Formation of northern Montana was deposited over an approximately 4 Myr interval during the Campanian (Late Cretaceous). Despite having been prospected and collected continuously by palaeontologists for over a century, few ...
Victoria M. Arbour, David C. Evans
doaj +2 more sources
A new ankylosaurid dinosaur from the Upper Cretaceous (Kirtlandian) of New Mexico with implications for ankylosaurid diversity in the Upper Cretaceous of western North America. [PDF]
PLoS ONE, 2014 A new ankylosaurid (Ankylosauria: Dinosauria), Ziapelta sanjuanensis, gen. et sp. nov., is based on a complete skull, an incomplete first cervical half ring, a possible fragment of the second cervical half ring, and additional fragmentary osteoderms. The
Victoria M Arbour +6 more
doaj +2 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
Jason M Bourke +2 more
doaj +2 more sources
Autopodium of the holotype of Dracopelta zbyszewskii (Dinosauria, Ankylosauria) and its type horizon and locality (Upper Jurassic: Tithonian, western Portugal) [PDF]
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2005 : Dracopelta zbyszewskii is a poorly known ankylosaur dinosaur from the Upper Jurassic of Portugal. Even its early history has hitherto remained problematic, mostly due to scarce recorded information.
Xabier Pereda Suberbiola +3 more
openaire +3 more sources
Limb-bone scaling indicates diverse stance and gait in quadrupedal ornithischian dinosaurs. [PDF]
PLoS One, 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 ...
Maidment SC +3 more
europepmc +2 more sources
The phylogenetic nomenclature of ornithischian dinosaurs. [PDF]
PeerJ, 2021 Ornithischians form a large clade of globally distributed Mesozoic dinosaurs, and represent one of their three major radiations. Throughout their evolutionary history, exceeding 134 million years, ornithischians evolved considerable morphological ...
Madzia D +5 more
europepmc +4 more sources