Results 41 to 50 of about 294 (136)

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

Inferred presence of extraoral tissues in Triassic archosauromorphs and the evolutionary implications for the clade Sauropsida

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Recent work has suggested that the presence of extraoral soft tissues (‘lips’), in the form of labial scales in theropod dinosaurs, could be inferred based on: anteroposteriorly distributed foramina in the rostral bones, similar to extant lepidosaurs; vertically projected teeth; uniform enamel thickness in maxillary teeth; and an allometric ...
Rafael Terras, Jaqueline Borger, Manuelle O. P. Almeida, Silvia Bettin, Owen A. Higgins, Giulia Marciani, Stefano Benazzi, Rodrigo T. Müller, Leonardo Kerber, Mirian Carbonera   +9 more
wiley   +1 more source

Osteología y relaciones filogenéticas de Aucasaurus Garridoi Coria, Chiappe y Dingus, 2002 (Dinosauria, Theropoda, Abelisauridae). Implicancias sistemáticas y paleobiogeográficas en la evolución de los Abelisáuridos

, 2021
Abelisauridae (Dinosauria, Theropoda) es un taxón de dinosaurios terópodos caracterizado por la presencia de huesos craneales muy ornamentados, reducción extrema de los miembros anteriores, vértebras caudales anteriores y medias con articulaciones ...
Mattia, Antonio Baiano
core  

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

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

Abelisauridae Bonaparte and Novas 1985

, 2003
Abelisauridae Bonaparte and Novas, 1985 Included taxa. Abelisaurus comahuensis Bonaparte and Novas, 1985; Camotaurus sastrei Bonaparte, 1985; Genusaurus sisteronis Accarie, Beaudoin, Dejax, Friès, Michard and Taquet, 1995; Ilokelesia aguadagrandensis Coria and Salgado, 2000; Indosuchus raptorius Huene, 1932; Majungatholus atopus Sues and Taquet, 1979 ...
openaire   +1 more source

ABELISAURID PEDAL UNGUALS FROM THE LATE CRETACEOUS OF INDIA

Publicación Electrónica de la Asociación Paleontológica Argentina, 2015
The ungual phalanges of theropod dinosaurs discovered in the Lameta Formation (Maastrichtian), central India, exhibit distinctive characters unknown in other theropods.
Fernando E. Novas, Saswati Bandyopadhyay
doaj  

Data from: Abelisauridae (Dinosauria: Theropoda) from the Late Jurassic of Portugal and dentition-based phylogeny as a contribution for the identification of isolated theropod teeth

, 2014
Theropod dinosaurs form a highly diversified clade, and their teeth are some of the most common components of the Mesozoic dinosaur fossil record. This is the case in the Lourinhã Formation (Late Jurassic, Kimmeridgian-Tithonian) of Portugal, where ...
Mateus, Octávio, Hendrickx, Christophe
core   +1 more source

Beyond species recognition hypothesis: evolutionary trends in Abelisauridae cranial ornamentation

Paleobiology
Abstract Abelisaurid dinosaurs display a remarkable diversity in cranial ornamentation, which includes several features such as rugosities, pits and grooves on the rostrum and orbital regions, midline knobs, and paired plus sculptured structures across the skull roof.
Enzo Emanuel Seculi Pereyra, Ignacio Maria Soto, Damian Eduardo Perez   +2 more
openaire   +1 more source