Results 41 to 50 of about 547 (145)

A new medium-sized abelisaurid (Theropoda, Dinosauria) from the late cretaceous (Maastrichtian) Allen Formation of Northern Patagonia, Argentina [PDF]

, 2021
Abelisaurid theropods are well known in Cretaceous beds along South America, particularly Patagonia. However, the record of latest Cretaceous abelisauroids is still far from satisfactory.
Agnolin, Federico, Aranciaga Rolando, Alexis Mauro, Brissón Egli, Federico, Cerroni, Mauricio Andrés, García Marsa, Jordi Alexis, Motta, Matias Javier, Novas, Fernando Emilio, Rozadilla, Sebastian   +7 more
core   +1 more source

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

, 2012
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

A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China [PDF]

, 2012
The Early Cretaceous fossil record of large−bodied theropods from Asia is poor, hindering comparison of Asian predatory dinosaur faunas with those from other continents. One of the few large Asian theropod specimens from this interval is a partial skull (
Allain R., Benson R.B J., Benson R.B.J., Bonaparte J.F., Britt B.B., Brusatte S.L., Brusatte S.L., Brusatte S.L., Brusatte S.L., Buffetaut E., Calvo J.O., Carrano M.T., Charig A.J., Coria R.A., Currie P.J., Currie P.J., Dong Z.-M., Gauthier J., Harris J.D., Hutt S., Madsen J.H., Madsen J.H., Marsh O.C., Marsh O.C., Marsh O.C., Milner A., Norell M.A., Powell H.P., Rauhut O.W.M., Rauhut O.W.M., Rauhut O.W.M., Roger B.J. Benson, Sadleir R.W., Sampson S.D., Stephen L. Brusatte, Stromer E., Xing Xu, Xu X.   +37 more
core   +1 more source

Reconstructing the past:methods and techniques for the digital restoration of fossils [PDF]

, 2016
During fossilization, the remains of extinct organisms are subjected to taphonomic and diagenetic processes. As a result, fossils show a variety of preservational artefacts, which can range from small breaks and cracks, disarticulation and fragmentation,
Lautenschlager, Stephan
core   +5 more sources

Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods

Papers in Palaeontology, Volume 10, Issue 6, November/December 2024.
Abstract The Lower Cretaceous Wealden Supergroup of southern England yields a diverse assemblage of theropod dinosaurs, its taxa being represented by fragments in addition to some of the most informative associated skeletons of the European Mesozoic. Spinosaurids, neovenatorid allosauroids, tyrannosauroids and dromaeosaurids are among reported Wealden ...
Chris T. Barker, Lucy Handford, Darren Naish, Simon Wills, Christophe Hendrickx, Phil Hadland, Dave Brockhurst, Neil J. Gostling   +7 more
wiley   +1 more source

Phylogeny of Allosauroidea (Dinosauria:Theropoda): Comparative analysis and resolution [PDF]

, 2008
Allosauroidea, a clade of large-bodied theropod dinosaurs that ranged from the Middle Jurassic until the Late Cretaceous, has been the subject of extensive phylogenetic study.
Brusatte, S.L., Sereno, P.C.
core   +1 more source

Testing the persistence of Carcharodontosauridae (Theropoda) in the Upper Cretaceous of Patagonia based on dental evidence [PDF]

, 2021
The deposits corresponding to the Upper Cretaceous Neuquén and San Jorge Gulf basins from northern and central Patagonia have provided two of the most complete sequences of terrestrial vertebrate faunas of all Gondwanan landmasses.
Canudo, J. I., Casal, G. A., Da Silva Correa, Samuel Aparecido, Dos Santos, D., Juárez Valieri, R. D., Martinelli, Agustín Guillermo, Meso, Jorge Gustavo, Poblete, F., Porfiri, Juan Domingo   +8 more
core   +1 more source

A new abelisaurid dinosaur from the end Cretaceous of Patagonia and evolutionary rates among the Ceratosauria

Cladistics, Volume 40, Issue 3, Page 307-356, June 2024.
Abstract Gondwanan dinosaur faunae during the 20 Myr preceding the Cretaceous–Palaeogene (K/Pg) extinction included several lineages that were absent or poorly represented in Laurasian landmasses. Among these, the South American fossil record contains diverse abelisaurids, arguably the most successful groups of carnivorous dinosaurs from Gondwana in ...
Diego Pol, Mattia Antonio Baiano, David Černý, Fernando E. Novas, Ignacio A. Cerda, Michael Pittman   +5 more
wiley   +1 more source

Comparative cranial biomechanics reveal that Late Cretaceous tyrannosaurids exerted relatively greater bite force than in early‐diverging tyrannosauroids

The Anatomical Record, Volume 307, Issue 5, Page 1897-1917, May 2024.
Abstract Tyrannosaurus has been an exemplar organism in feeding biomechanical analyses. An adult Tyrannosaurus could exert a bone‐splintering bite force, through expanded jaw muscles and a robust skull and teeth. While feeding function of adult Tyrannosaurus has been thoroughly studied, such analyses have yet to expand to other tyrannosauroids ...
Evan Johnson‐Ransom, Feng Li, Xing Xu, Raul Ramos, Adam J. Midzuk, Ulrike Thon, Kyle Atkins‐Weltman, Eric Snively   +7 more
wiley   +1 more source

Dinosaur biogeographic structure and Mesozoic continental fragmentation: a network-based approach [PDF]

, 2016
Aim: To reconstruct dinosaur macro-biogeographical patterns through the Mesozoic Era using a network-based approach. We test how continental fragmentation affected dinosaur macro-biogeographical structure and evolutionary rates.
Ali, Amiot, Barrett, Bates, Benjamini, Benson, Benson, Benton, Boyland, Brusatte, Butler, Butts, Butts, Carrano, Croft, Csardi, Cumming, Dunhill, Ezcurra, Ezcurra, Ezcurra, Foote, Foote, Foote, Freeman, Gheerbrant, Gradstein, Haq, Holtz, Huber, Kones, Lloyd, Longrich, Longrich, Lull, Mannion, Mannion, Mannion, Miller, Moalic, Newman, Newman, Nieminen, Nopcsa, Opsahl, R Core Team, Rowe, Rutz, Sereno, Sereno, Sidor, Sidor, Smith, Smith, Starrfelt, Stubbs, Tschopp, Turner, Upchurch, Upchurch, Upchurch, Upchurch, Veevers, Venables, Vilhena, Vilhena, Wang, Whiteside, Whiteside, Xu   +69 more
core   +1 more source