Results 21 to 30 of about 127 (100)

Considerações sobre abelisauridae (Dinosauria: Theropoda) e o registro brasileiro

Terrae Didatica, 2020
Abelisauridae é uma ampla família de dinossauros do grupo Theropoda, que inclui grandes animais carnívoros extintos bem como as aves dos dias atuais. Sua distribuição é majoritariamente sulista, mas alguns espécimes são oriundos da Europa. As relações filogenéticas dos abelissaurídeos têm se tornado refinadas, mas ainda existem discordâncias quanto ao ...
Rafael Delcourt de Seixas Ferreira, Natan Santos Brilhante, Fresia Ricardi-Branco   +2 more
openaire   +2 more sources

An Early Cretaceous theropod dinosaur from Brazil sheds light on the cranial evolution of the Abelisauridae [PDF]

Comptes Rendus Palevol, 2020
Abelisaurid theropods dominated the predator role across Gondwana during the Late Cretaceous. They are characterized by highly reduced forelimbs and one of the most specialized cranial morphologies among carnivorous dinosaurs, exemplified by a broad skull, short rostrum, high occipital region, and highly kinetic intramandibular joint, suggestive of a ...
Zaher, Hussam, Pol, Diego, Navarro, Bruno A., Delcourt, Rafael, Carvalho, Alberto B.   +4 more
openaire   +2 more sources

NEW ABELISAURID MATERIAL FROM THE UPPER CRETACEOUS (CENOMANIAN) OF MOROCCO

Rivista Italiana di Paleontologia e Stratigrafia, 2011
Fragmentary cranial bones of dinosaur origin have been recently recovered from the Kem Kem beds (Upper Cretaceous, Cenomanian) of Morocco. They include two incompletely preserved maxillary bones evidencing diagnostic features of abelisaurid theropods ...
SIMONE D'ORAZI PORCHETTI, UMBERTO NICOSIA, ATTILIO BIAVA, SIMONE MAGANUCO   +3 more
doaj   +1 more source

Paleobiogeographic evolution and distribution of Carcharodontosauridae (Dinosauria, Theropoda) during the middle Cretaceous of North Africa

Papéis Avulsos de Zoologia, 2018
Over the last few decades, the systematics and evolution of carcharodontosaurids, a group of large predatory dinosaurs, from North Africa have been better understood mainly due the discovery of new species.
Carlos Roberto dos Anjos Candeiro, Stephen Louis Brusatte, Luciano Vidal, Paulo Victor Luiz Gomes da Costa Pereira   +3 more
doaj   +1 more source

The geometry of taking flight: Limb morphometrics in Mesozoic theropods

Journal of Morphology, Volume 276, Issue 2, Page 152-166, February 2015., 2015
ABSTRACT Theropoda was one of the most successful dinosaurian clades during the Mesozoic and has remained a dominant component of faunas throughout the Cenozoic, with nearly 10,000 extant representatives. The discovery of Archaeopteryx provides evidence that avian theropods evolved at least 155 million years ago and that more than half of the tenure of
Brandon P. Hedrick, Phillip L. Manning, Eric R. Lynch, Samantha A. Cordero, Peter Dodson   +4 more
wiley   +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

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

Osteology of Viavenator exxoni (Abelisauridae; Furileusauria) from the Bajo de la Carpa Formation, NW Patagonia, Argentina [PDF]

Cretaceous Research, 2018
Fil: Filippi, Leonardo Sebastian. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Centro Nacional Patagonico. Instituto Patagonico de Geologia y Paleontologia; Argentina. Municipio de Rincon de Los Sauces.
Filippi, Leonardo Sebastián, Méndez, Ariel Hernán, Gianechini, Federico Abel, Juárez Valieri, Rubén D., Garrido, Alberto Carlos   +4 more
openaire   +2 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

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