Results 11 to 20 of about 2,200 (200)

Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Tolchard FB, Perkins BW, Nesbitt SJ.
europepmc   +2 more sources

Tooth replacement in the early-diverging neornithischian Jeholosaurus shangyuanensis and implications for dental evolution and herbivorous adaptation in Ornithischia [PDF]

open access: yesBMC Ecology and Evolution
Background Tooth replacement patterns of early-diverging ornithischians, which are important for understanding the evolution of the highly specialized dental systems in hadrosaurid and ceratopsid dinosaurs, are poorly known.
Jinfeng Hu   +3 more
doaj   +2 more sources

Bone histology in Dysalotosaurus lettowvorbecki (Ornithischia: Iguanodontia)--variation, growth, and implications. [PDF]

open access: yesPLoS ONE, 2012
BackgroundDysalotosaurus lettowvorbecki is a small ornithopod dinosaur known from thousands of bones and several ontogenetic stages. It was found in a single locality within the Tendaguru Formation of southeastern Tanzania, possibly representing a single
Tom R Hübner
doaj   +4 more sources

A new stegosaur (Dinosauria: Ornithischia) from the Middle Jurassic of Gansu Province, China [PDF]

open access: yesScientific Reports
Stegosaurs are a minor but iconic clade of ornithischian dinosaurs, yet due to a poor fossil record, their early evolution is poorly understood. Here, we describe a new stegosaur, Baiyinosaurus baojiensis, gen. et sp. nov.
Li Ning   +4 more
doaj   +2 more sources

The phylogenetic nomenclature of ornithischian dinosaurs [PDF]

open access: yesPeerJ, 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 ...
Daniel Madzia   +5 more
doaj   +3 more sources

Correction: A new basal ornithopod (Dinosauria: Ornithischia) from the Early Cretaceous of Texas. [PDF]

open access: yesPLoS ONE, 2019
[This corrects the article DOI: 10.1371/journal.pone.0207935.].
Kate A Andrzejewski   +2 more
doaj   +2 more sources

An additional hadrosaurid specimen (Dinosauria: Ornithischia) from the marine Maastrichtian deposits of the Maastricht area

open access: yesCarnets de Géologie, 2009
An isolated dinosaur vertebra from the marine deposits of the Maastrichtian type area, near the city of Maastricht (The Netherlands), collected during the 19th century and kept in the palaeontological collection of the Museum für Naturkunde in Berlin, is
Buffetaut Eric
doaj   +4 more sources

The enamel microstructure of Manidens condorensis: New hypotheses on the ancestral state and evolution of enamel in Ornithischia [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Previous studies on enamel microstructure in Ornithischia have focused on derived lineages of this clade based on species from the northern hemisphere.
Marcos G. Becerra, Diego Pol
doaj   +1 more source

Males resemble females. re-evaluating sexual dimorphism in protoceratops andrewsi (neoceratopsia, protoceratopsidae) [PDF]

open access: yes, 2015
BACKGROUND: Protoceratops andrewsi (Neoceratopsia, Protoceratopsidae) is a well-known dinosaur from the Upper Cretaceous of Mongolia. Some previous workers hypothesized sexual dimorphism in the cranial shape of this taxon, using qualitative and ...
Farke, Andrew A.   +3 more
core   +15 more sources

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