A new styracosternan hadrosauroid (Dinosauria: Ornithischia) from the Early Cretaceous of Portell, Spain. [PDF]
PLoS ONE, 2021 A new styracosternan ornithopod genus and species is described based on the right dentary of a single specimen from the Mirambell Formation (Early Cretaceous, early Barremian) at the locality of Portell, (Castellón, Spain).
Andrés Santos-Cubedo +3 more
doaj +3 more sources
Digital preparation and osteology of the skull of Lesothosaurus diagnosticus (Ornithischia: Dinosauria) [PDF]
PeerJ, 2015 Several skulls of the ornithischian dinosaur Lesothosaurus diagnosticus (Lower Jurassic, southern Africa) are known, but all are either incomplete, deformed, or incompletely prepared.
Laura B. Porro +2 more
doaj +10 more sources
Dietary palaeoecology of an Early Cretaceous armoured dinosaur (Ornithischia; Nodosauridae) based on floral analysis of stomach contents [PDF]
Royal Society Open Science, 2020 The exceptionally well-preserved holotype of the armoured dinosaur Borealopelta markmitchelli (Ornithischia; Nodosauridae) from the Early Cretaceous (Clearwater Formation) of northern Alberta preserves a distinct mass within the abdominal cavity ...
Caleb M. Brown +6 more
doaj +3 more sources
A new, ‘hip’ way to breathe [PDF]
eLife, 2021 Ornithischians, one of the three major groups of dinosaurs, developed a unique mechanism to ensure airflow in the lungs.
Marc R Spencer
doaj +2 more sources
Statistical evaluation of character support reveals the instability of higher-level dinosaur phylogeny [PDF]
Scientific Reports, 2023 The interrelationships of the three major dinosaur clades (Theropoda, Sauropodomorpha, and Ornithischia) have come under increased scrutiny following the recovery of conflicting phylogenies by a large new character matrix and its extensively modified ...
David Černý, Ashley L. Simonoff
doaj +2 more sources
Appendicular skeleton of Protoceratops andrewsi (Dinosauria, Ornithischia): comparative morphology, ontogenetic changes, and the implications for non-ceratopsid ceratopsian locomotion [PDF]
PeerJ, 2019 Protoceratops andrewsi is a well-known ceratopsian dinosaur from the Djadokhta Formation (Upper Cretaceous, Mongolia). Since the 1920s, numerous skeletons of different ontogenetic stages from hatchlings to adults, including fully articulated specimens ...
Justyna Słowiak +2 more
doaj +3 more sources
A new Heterodontosaurus specimen elucidates the unique ventilatory macroevolution of ornithischian dinosaurs [PDF]
eLife, 2021 Ornithischian dinosaurs were ecologically prominent herbivores of the Mesozoic Era that achieved a global distribution by the onset of the Cretaceous. The ornithischian body plan is aberrant relative to other ornithodiran clades, and crucial details of ...
Viktor J Radermacher +8 more
doaj +2 more sources
Neuroanatomy of the late Cretaceous Thescelosaurus neglectus (Neornithischia: Thescelosauridae) reveals novel ecological specialisations within Dinosauria [PDF]
Scientific Reports, 2023 Ornithischian dinosaurs exhibited a diversity of ecologies, locomotory modes, and social structures, making them an ideal clade in which to study the evolution of neuroanatomy and behaviour. Here, we present a 3D digital reconstruction of the endocranial
David J. Button, Lindsay E. Zanno
doaj +2 more sources
Multiple optimality criteria support Ornithoscelida [PDF]
Royal Society Open Science, 2017 A recent study of early dinosaur evolution using equal-weights parsimony recovered a scheme of dinosaur interrelationships and classification that differed from historical consensus in a single, but significant, respect; Ornithischia and Saurischia were ...
Luke A. Parry +2 more
doaj +4 more sources
Royal Society Open Science, 2021 The armoured dinosaurs, Thyreophora, were a diverse clade of ornithischians known from the Early Jurassic to the end of the Cretaceous. During the Middle and Late Jurassic, the thyreophorans radiated to evolve large body size, quadrupedality, and complex
Benjamin T. Breeden +4 more
doaj +2 more sources