Results 41 to 50 of about 784 (138)

The anatomy of Dryptosaurus aquilunguis (Dinosauria:Theropoda) and a review of its tyrannosauroid affinities [PDF]

no ...
Benson, R.B.J., Brusatte, S.L., Norell, M.A.   +2 more
core   +1 more source

A lost tooth in the jungle: revisiting the sole dinosaurian record from northern Brazil [PDF]

Anais da Academia Brasileira de Ciências
The record of Mesozoic reptiles in the Northern region of Brazil is extremely limited, with the only definite occurrence consisting of two ziphodont teeth recovered from an oil well core in the municipality of Nova Olinda do Norte, Amazonas state, from ...
THEO B. RIBEIRO, ATHIRSON S. ALBUQUERQUE, THIAGO BRAGANÇA, PAULO VICTOR LUIZ G.C. PEREIRA   +3 more
doaj   +1 more source

Reanalysis of "Raptorex kriegsteini": a juvenile tyrannosaurid dinosaur from Mongolia.

PLoS ONE, 2011
The carnivorous Tyrannosauridae are among the most iconic dinosaurs: typified by large body size, tiny forelimbs, and massive robust skulls with laterally thickened teeth.
Denver W Fowler, Holly N Woodward, Elizabeth A Freedman, Peter L Larson, John R Horner   +4 more
doaj   +1 more source

Tyrannosaur Paleobiology: New Research on Ancient Exemplar Organisms [PDF]

Tyrannosaurs, the group of dinosaurian carnivores that includes Tyrannosaurus rex and its closest relatives, are icons of prehistory. They are also the most intensively studied extinct dinosaurs, and thanks to large sample sizes and an influx of new ...
American Museum of Natural History, Balanoff, A M, Bever, G S, Brusatte, S L, Carr, T D, Carthage College, Kenosha, Chinese Academy of Sciences, Beijing, Choiniere, J N, Colombia University, Erickson, G M, Florida State, George Washington, Hutchinson, J R, Makovicky, P J, Norell, M A, The Field Museum of Natural History, Chicago, Xu, X, Yale   +17 more
core   +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]

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, Britt, Carpenter, Charig, Chure, Coria, Currie, Dong, Galton, Gauthier, Harris, Holtz, Hu, Hutt, Kellner, Kobayashi, Kobayashi, Madsen, Madsen, Osmólska, Ostrom, Owen, Rauhut, Riabinin, ROGER B. J. BENSON, Sadleir, Sun, XU XING   +27 more
core   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

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

International ...
Alexander, Alexandra Houssaye, Amson, Andrew H. Lee, Antoine, Bibi, Blomberg, Buffrénil, Campione, Canoville, Carrano, Carrano, Christiansen, Clementz, Cornette, Cubo, Doube, Doube, Dumont, Evin, Fish, Garland, Garland, Gheerbrant, Gilbert, Girondot, Gray, Gregory, Hayashi, Hildebrand, Hokkanen, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, John R. Hutchinson, Katja Waskow, Klein, Laurin, Meredith, Nakajima, O'Neill, Oxnard, Oxnard, Polly, Prothero, Quemeneur, R Core Team, Ramsay, Raphaël Cornette, Remes, Ren, Ren, Ripley, Ross, Ruff, Sander, Schalkwyk, Schmidt-Nielsen, Sereno, Shoji Hayashi, Steiner, Straehl, Thompson, Todd, Venables, Vizcaino, Wall, Warner, Waskow   +72 more
core   +1 more source

Elliptic Fourier analysis as a tool for the taxonomic identification of isolated theropod pedal phalanges

The Anatomical Record, EarlyView.
Abstract Studies of Upper Cretaceous deposits in North America have provided invaluable insights into the continental ecosystems of this time. Theropod (Saurischia, Dinosauria) pedal phalanges are commonplace in these deposits but can be difficult to identify at a finer taxonomic resolution.
Trystan M. Warnock‐Juteau, Stephanie M. Smith, Thomas M. Cullen   +2 more
wiley   +1 more source

On Galileo’s Tallest Column

Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
The height at which an unloaded column will fail under its own weight was calculated for first time by Galileo for cylindrical columns. Galileo questioned himself if there exists a shape function for the cross section of the column with which it can attain a greater height than the cylindrical column.
Mariano Vázquez Espí, Jaime Cervera Bravo, Carlos Olmedo Rojas, Reza Jazar   +3 more
wiley   +1 more source

The systematics of Late Jurassic tyrannosauroids (Dinosauria: Theropoda) from Europe and North America [PDF]

Recent discoveries of more than ten new species of tyrannosauroid theropods are helping to understand the origin and evolution of colossal body size and other characteristic features of Tyrannosaurus rex and its terminal Cretaceous relatives ...
Brusatte, Steve, Roger, Benson
core   +1 more source