Ontogeny and variation in the skull roof and braincase of the hadrosaurid dinosaur Maiasaura peeblesorum from the Upper Cretaceous of Montana, USA [PDF]
Five new partial skulls of the hadrosaurid dinosaur Maiasaura peeblesorum from the Linster Quarry bone bed (Two Medicine Formation, Campanian) in Montana, USA, provide the basis for a description of the skull roof and braincase morphology of this taxon ...
BRADLEY MCFEETERS +2 more
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Dinosauria (Fig. 6: node 1) Definition adopted: The least inclusive clade containing Iguanodon bernissartensis, Megalosaurus bucklandii and Cetiosaurus oxoniensis Phillips, 1871 (Langer et al., 2020). Characters in support (here): Basipterygoid process mediolaterally compressed (Char.
Norman, David B +3 more
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Ornithischians, one of the three major groups of dinosaurs, developed a unique mechanism to ensure airflow in the lungs.
Marc R Spencer
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Why tyrannosaurid forelimbs were so short: An integrative hypothesis [PDF]
The unusually shortened limbs of giant theropods, including abelisaurids, carcharodontosaurids, and derived tyrannosauroids such as Tyrannosaurus rex have long been an object of wonder, speculation, and even derision on the part of both ...
KEVIN PADIAN
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Cranial anatomy and stratigraphy of a new specimen of the tyrannosaurine dinosaur Daspletosaurus from the Judith River Formation of Central Montana, USA [PDF]
The tyrannosaurine Daspletosaurus contains three recognized species from the Campanian of Montana and Alberta: Daspletosaurus torosus, Daspletosaurus wilsoni, and Daspletosaurus horneri. The recently named D. wilsoni has been proposed to represent a
ETHAN WARNER-COWGILL +3 more
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On the Classification of the Dinosauria, with observations on the Dinosauria of the Trias [PDF]
T he recognition of what are now commonly termed the Dinosauria , as a peculiar group of the Reptilia , is due to that remarkable man whose recent death all who are interested in the progress of sound palæeontology must deplore–Hermann von Meyer.
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Estimating cranial musculoskeletal constraints in theropod dinosaurs [PDF]
Many inferences on the biology, behaviour and ecology of extinct vertebrates are based on the reconstruction of the musculature and rely considerably on its accuracy.
Stephan Lautenschlager
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A genus-level supertree of the Dinosauria [PDF]
One of the ultimate aims of systematics is the reconstruction of the tree of life. This is a huge undertaking that is inhibited by the existence of a computational limit to the inclusiveness of phylogenetic analyses. Supertree methods have been developed to overcome, or at least to go around this problem by combining smaller, partially overlapping ...
Pisani, Davide +3 more
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Variability in biological diversity of dinosaurs and types of their diet [PDF]
Biodiversity analysis underlies macroevolutionary studies and allows to identify mass extinctions. Numerous studies of mass extinctions show that geological factors play a central role in determining the diversity dynamics. The late Cretaceous extinction
Egorov Pavel +4 more
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Taxonomic and stratigraphic update of the material historically attributed to Megalosaurus from Portugal [PDF]
The first paleontological works on Mesozoic vertebrates from Portugal, carried out from the end of the 19th and the first half of the 20th century, provided the discovery of significant collections of vertebrate fossils.
Elisabete Malafaia +4 more
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