Results 91 to 100 of about 3,472 (207)

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

Taxonomic notes on Megapnosaurus and 'Syntarsus' (Theropoda: Coelophysidae)

, 2022
The genus name Syntarsus Raath 1969 is preoccupied by the genus Syntarsus Fairmaire 1869. The replacement name Megapnosaurus Ivie et al. 2001 was proposed but its usage is inconsistent due to both controversy on the validity of the nomenclatural act proposing Megapnosaurus and possible synonymy between it and Coelophysis Cope 1889.
McDavid, Skye N, Bugos, Jeb E
openaire   +1 more source

Dinosaurs in decline tens of millions of years before their final extinction [PDF]

, 2016
Whether dinosaurs were in a long-term decline or whether they were reigning strong right up to their final disappearance at the Cretaceous–Paleogene (K-Pg) mass extinction event 66 Mya has been debated for decades with no clear resolution.
Chenet, Chris Venditti, Manabu Sakamoto, Michael J. Benton, Sullivan   +4 more
core   +2 more sources

Cautionary tales on the use of proxies to estimate body size and form of extinct animals

Ecology and Evolution, Volume 14, Issue 9, September 2024.
Reconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Joel H. Gayford, Russell K. Engelman, Phillip C. Sternes, Wayne M. Itano, Mohamad Bazzi, Alberto Collareta, Rodolfo Salas‐Gismondi, Kenshu Shimada   +7 more
wiley   +1 more source

Cancellous bone and theropod dinosaur locomotion. Part III—Inferring posture and locomotor biomechanics in extinct theropods, and its evolution on the line to birds [PDF]

, 2018
This paper is the last of a three-part series that investigates the architecture of cancellous bone in the main hindlimb bones of theropod dinosaurs, and uses cancellous bone architectural patterns to infer locomotor biomechanics in extinct non-avian ...
Abourachid, Alexander, Allen, Allen, Allmendinger, Attene, Bakker, Bates, Bates, Bates, Bates, Beer, Benson, Biewener, Biewener, Biewener, Bishop, Bishop, Bishop, Bishop, Bishop, Blob, Brochu, Brusatte, Butcher, Campione, Cardozo, Carrano, Carrano, Carrano, Carrano, Christiansen, Christiansen, Clack, Dececchi, Delp, Farlow, Farlow, Fujiwara, Gao, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gatesy, Gilmore, Heers, Henderson, Henderson, Holtz, Horner, Hotton, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Hutchinson, Jacobson, Johnson, Kambic, Kambic, Keller, Kemp, Lai, Lambe, Lautenschlager, Lee, Marsh, Martelli, McCrea, Molnar, Norell, Norell, Osborn, Ostrom, Paul, Pauwels, Pierce, Pittman, Rauhut, Reilly, Roberts, Rubenson, Russell, Sellers, Sellers, Snively, Stevens, Taylor, Thewissen, Thulborn, Tsai, Tsai, Tsuihiji, Unwin, Valente, Van Der Reest, Villette, Wall-Scheffler, Wilson, Xu, Xu, Zelenitsky   +117 more
core   +3 more sources

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

Paleontologia [PDF]

, 2018
XXXII Congresso Brasileiro de Zoologia, Foz do Iguaçu, 2018. Tema: Desafios e perspectivas para a Zoologia na América LatinaCaderno de Resumos de Trabalhos da Área temática Paleontologia, do XXXII Congresso Brasileiro de ZoologiaSociedade Brasileira de ...

core  

Descendants of the Jurassic turiasaurs from Iberia found refuge in the Early Cretaceous of western USA [PDF]

, 2017
A new, largely complete eusauropod dinosaur with cranial and postcranial elements from two skeletons, Mierasaurus bobyoungi gen. nov., sp. nov. from the lower Yellow Cat Member (Early Cretaceous) of Utah (USA), is the first recognized member of ...
Alcalá, L, Cobos, A, DeBlieux, D, Foster, JR, Kirkland, JI, Royo-Torres, R, Upchurch, P   +6 more
core   +2 more sources

Restos de Alvarezsauridae (Theropoda, Coelurosauria) en la Formación Alien (Campaniano-Maastrichtiano), en Salitral Ojo de Agua, Provincia de Río Negro, Argentina Remains of Alvarezsauridae (Theropoda, Coelurosauria) in the Alien Formation (Campanian-Maastrichthian), in Salitral Ojo de Agua, Río Negro Province, Argentina

Andean Geology, 2009
Se presentan nuevos restos provenientes de estratos campaniano-maastrichtianos de la Formación Alien, en Salitral Ojo de Agua (Río Negro, Argentina), los cuales son asignables a Alvarezsauridae indet.
Leonardo Salgado, Rodolfo A Coria, Andrea B Arcucci, Luis M Chiappe   +3 more
doaj  

First record of Megaraptora (Theropoda, Neovenatoridae) from Brazil

Comptes Rendus Palevol, 2012
Abstract An isolated caudal vertebral centrum of a theropod dinosaur was discovered in the Bauru Basin (Late Cretaceous) of Brazil, in the Maastrichtian Sao Jose do Rio Preto Formation. The vertebral centrum has pneumatic features that are similar to those in the megaraptoran theropods Aerosteon , Megaraptor , and Orkoraptor .
Méndez, Ariel Hernán, Novas, Fernando Emilio, Iori, Fabiano V.   +2 more
openaire   +2 more sources