Results 41 to 50 of about 939 (164)

Biomechanics of juvenile tyrannosaurid mandibles and their implications for bite force: Evolutionary biology

open access: yesThe Anatomical Record, Volume 305, Issue 2, Page 373-392, February 2022., 2022
Abstract The tyrannosaurids are among the most well‐studied dinosaurs described by science, and analysis of their feeding biomechanics allows for comparison between established tyrannosaurid genera and across ontogeny. 3D finite element analysis (FEA) was used to model and quantify the mechanical properties of the mandibles (lower jaws) of three ...
Andre J. Rowe, Eric Snively
wiley   +1 more source

Morphology of the temporal skull region in tetrapods: research history, functional explanations, and a new comprehensive classification scheme

open access: yesBiological Reviews, Volume 96, Issue 5, Page 2229-2257, October 2021., 2021
ABSTRACT The morphology of the temporal region in the tetrapod skull traditionally has been a widely discussed feature of vertebrate anatomy. The evolution of different temporal openings in Amniota (mammals, birds, and reptiles), Lissamphibia (frogs, salamanders, and caecilians), and several extinct tetrapod groups has sparked debates on the ...
Pascal Abel, Ingmar Werneburg
wiley   +1 more source

Tyrannosauridae Osborn 1905

open access: yes, 2022
Tyrannosauridae incertae sedis For multiple species Multiple species are the norm within a genus Multiple species have been documented in other dinosaur genera, especially contemporary Triceratops Sufficient time available for subtle speciation and may favor such, in parallel to speciation observed in Triceratops over exactly the same stratigraphic ...
Paul, Gregory S.   +2 more
openaire   +1 more source

Cranial anatomy and stratigraphy of a new specimen of the tyrannosaurine dinosaur Daspletosaurus from the Judith River Formation of Central Montana, USA [PDF]

open access: yesActa Palaeontologica Polonica
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
doaj   +1 more source

The first ornithomimosaur remains from Germany [PDF]

open access: yesActa Palaeontologica Polonica
Ornithomimosauria is a group of coelurosaurs primarily known from the Cretaceous of Asia and North America. The European record is comparatively sparse, with Pelecanimimus from the Lower Cretaceous of Spain being the only unequivocal representative. Here,
Denis Theda   +3 more
doaj   +1 more source

The anatomy and systematic position of the theropod dinosaur Chilantaisaurus tashuikouensis Hu, 1964 from the Early Cretaceous of Alanshan, People's Republic of China [PDF]

open access: yes, 2008
There is little consensus on the systematic position of the colossal theropod dinosaur Chilantaisaurus tashuikouensis from the Cretaceous (Aptian–?Albian or Upper Cretaceous) Ulansuhai Formation of Inner Mongolia, which has been recovered as a derived ...
Barsbold   +27 more
core   +1 more source

Biomechanical evolution of solid bones in large animals: a microanatomical investigation [PDF]

open access: yes, 2016
International ...
Alexander   +72 more
core   +1 more source

The muscle-powered bite of allosaurus (dinosauria; theropoda): an interpretation of cranio-dental morphology [PDF]

open access: yes, 2003
11 pages, 7 figures.[EN] The skull morphology of Allosaurus has been the subject of functional interpretations which imply a predatory behaviour radically different from that recorded in any predatory land vertebrate.
Antón, Mauricio   +3 more
core   +2 more sources

Theropod guild structure and the tyrannosaurid niche assimilation hypothesis: implications for predatory dinosaur macroecology and ontogeny in later Late Cretaceous Asiamerica. [PDF]

open access: yes, 2021
Well-sampled dinosaur communities from the Jurassic through the early Late Cretaceous show greater taxonomic diversity among larger (>50 kg) theropod taxa than communities of the Campano-Maastrichtian, particularly to those of eastern/central Asia and ...
Holtz, Thomas Richard Jr   +1 more
core   +1 more source

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