Results 31 to 40 of about 939 (164)

Allometric growth and intraspecific variation of the craniomandibular bones of Tarbosaurus bataar (Theropoda, Tyrannosauridae): a geometric morphometric approach [PDF]

Lethaia: an international journal of palaeontology and stratigraphy
Chan‐gyu Yun, Rafael Delcourt, Philip John Currie   +2 more
openalex   +2 more sources

Tyrannosauroid integument reveals conflicting patterns of gigantism and feather evolution. [PDF]

Biol Lett, 2017
Bell PR, Campione NE, Persons WS, Currie PJ, Larson PL, Tanke DH, Bakker RT.   +6 more
europepmc   +2 more sources

Variation, variability, and the origin of the avian endocranium:Insights from the anatomy of alioramus altai (theropoda: Tyrannosauroidea) [PDF]

, 2011
The internal braincase anatomy of the holotype of Alioramus altai, a relatively small-bodied tyrannosauroid from the Late Cretaceous of Mongolia, was studied using high-resolution computed tomography.
AH Turner, Amy M. Balanoff, C Clabaut, CA Brochu, CA Brochu, Daphne Soares, DK Zelenitsky, F Ali, Gabe S. Bever, GM Erickson, GP Wagner, GP Wagner, GP Wagner, GS Bever, GS Bever, GS Bever, GS Bever, HCE Larsson, HE Evans, HF Osborn, HT Jerison, I Salazar-Ciudad, J Gauthier, J Klembara, J Margugán-Lobón, JC Sedlmayr, JH Hurum, JN Choiniere, L Lefebvre, LE Zanno, LM Witmer, LM Witmer, M Kirscher, Mark A. Norell, MJ Donoghue, MJ Sanderson, P Senter, PJ Currie, R Lewontin, RE Molnar, RL Young, SB Emerson, SD Sampson, SL Brusatte, SL Brusatte, SL Brusatte, SM Kurzanov, Stephen L. Brusatte, SV Saveliev, T Tsuihiji, TD Carr, TD Carr, TR Holtz Jr, TR Holtz Jr, V Källersjö, X Xu, X Xu, Z Csiki   +57 more
core   +15 more sources

Consilient evidence affirms expansive stabilizing ligaments in the tyrannosaurid foot

Vertebrate Anatomy, Morphology, Palaeontology, 2022
Tyrannosaurid dinosaurs were ecologically unique vertebrates as the sole clade of large terrestrial carnivores (adults >400 kg) in their continent-spanning habitats.
Lara Surring, Michael Burns, Eric Snively, Daniel Barta, Thomas Holtz, Anthony Russell, Lawrence Witmer, Philip Currie   +7 more
doaj   +1 more source

Locomotor and postural diversity among reptiles viewed through the prism of femoral microanatomy: Palaeobiological implications for some Permian and Mesozoic taxa

Journal of Anatomy, Volume 242, Issue 5, Page 891-916, May 2023., 2023
Reptiles show great diversity of locomotion and posture. We employed phylogenetically informed statistical methods to explore their bone microanatomy. We used our models to infer the locomotion of extinct reptiles that document the different episodes of postural diversification in this clade.
Jordan Gônet, Jérémie Bardin, Marc Girondot, John R. Hutchinson, Michel Laurin   +4 more
wiley   +1 more source

Cranial ontogenetic variation in early saurischians and the role of heterochrony in the diversification of predatory dinosaurs [PDF]

, 2016
Non-avian saurischian skulls underwent at least 165 million years of evolution and shapes varied from elongated skulls, such as in the theropod Coelophysis, to short and box-shaped skulls, such as in the sauropod Camarasaurus.
Ezcurra, Martin D., Foth​, Christian, Hedrick, Brandon P.   +2 more
core   +12 more sources

Machine learning confirms new records of maniraptoran theropods in Middle Jurassic UK microvertebrate faunas

Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023
Abstract Current research suggests that the initial radiation of maniraptoran theropods occurred in the Middle Jurassic, although their fossil record is known almost exclusively from the Cretaceous. However, fossils of Jurassic maniraptorans are scarce, usually consisting solely of isolated teeth, and their identifications are often disputed.
Simon Wills, Charlie J. Underwood, Paul M. Barrett, Philip Mannion   +3 more
wiley   +1 more source

First application of dental microwear texture analysis to infer theropod feeding ecology

Palaeontology, Volume 65, Issue 6, November/December 2022., 2022
Abstract Theropods were the dominating apex predators in most Jurassic and Cretaceous terrestrial ecosystems. Their feeding ecology has always been of great interest, and new computational methods have yielded more detailed reconstructions of differences in theropod feeding behaviour. Many approaches, however, rely on well‐preserved skulls.
Daniela E. Winkler, Tai Kubo, Mugino O. Kubo, Thomas M. Kaiser, Thomas Tütken, Laura Porro   +5 more
wiley   +1 more source

Ecological niche modelling does not support climatically-driven dinosaur diversity decline before the Cretaceous/Paleogene mass extinction. [PDF]

Nat Commun, 2019
Chiarenza AA, Mannion PD, Lunt DJ, Farnsworth A, Jones LA, Kelland SJ, Allison PA.   +6 more
europepmc   +4 more sources

Anatomy and relationships of the early diverging Crocodylomorphs Junggarsuchus sloani and Dibothrosuchus elaphros

The Anatomical Record, Volume 305, Issue 10, Page 2463-2556, October 2022., 2022
Abstract The holotype of Junggarsuchus sloani, from the Shishugou Formation (early Late Jurassic) of Xinjiang, China, consists of a nearly complete skull and the anterior half of an articulated skeleton, including the pectoral girdles, nearly complete forelimbs, vertebral column, and ribs.
Alexander A. Ruebenstahl, Michael D. Klein, Hongyu Yi, Xing Xu, James M. Clark   +4 more
wiley   +1 more source