Results 11 to 20 of about 1,524 (202)

Postcranial osteology of Beipiaosaurus inexpectus (Theropoda: Therizinosauria).

open access: yesPLoS ONE, 2021
Beipiaosaurus inexpectus, from the Lower Cretaceous Yixian Formation (Sihetun locality, near Beipiao), Liaoning, China, is a key taxon for understanding the early evolution of therizinosaurians.
Chun-Chi Liao   +3 more
doaj   +4 more sources

Notas Sobre Spinosauridae (Theropoda, Dinosauria) [PDF]

open access: yesAnuário do Instituto de Geociências, 2005
Spinosaur remains were collected in Africa, Europa, Asia and Brazil, coming from deposits with ages ranging from the Late Jurassic to the Late Cretaceous.
Elaine Batista Machado   +1 more
doaj   +3 more sources

Reconsidering the Avian Nature of the Oviraptorosaur Brain (Dinosauria: Theropoda). [PDF]

open access: yesPLoS ONE, 2014
The high degree of encephalization characterizing modern birds is the product of a long evolutionary history, our understanding of which is still largely in its infancy.
Amy M Balanoff, G S Bever, Mark A Norell
doaj   +4 more sources

European ornithomimosaurs (Dinosauria, Theropoda): an undetected record

open access: yesGeologica Acta, 2014
Early Cretaceous ornithomimosaurian theropod dinosaurs have been reported from various localities in Asia, whereas they remain poorly represented and extremely rare in North America, Africa and Europe.
R. ALLAIN   +3 more
doaj   +10 more sources

Forearm Range of Motion in Australovenator wintonensis (Theropoda, Megaraptoridae). [PDF]

open access: yesPLoS ONE, 2015
The hypertrophied manual claws and modified manus of megaraptoran theropods represent an unusual morphological adaptation among carnivorous dinosaurs. The skeleton of Australovenator wintonensis from the Cenomanian of Australia is among the most complete
Matt A White   +6 more
doaj   +5 more sources

The first juvenile dromaeosaurid (Dinosauria: Theropoda) from Arctic Alaska.

open access: yesPLoS ONE, 2020
Compared to the osteological record of herbivorous dinosaurs from the Late Cretaceous Prince Creek Formation of northern Alaska, there are relatively fewer remains of theropods.
Alfio Alessandro Chiarenza   +5 more
doaj   +3 more sources

Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium. [PDF]

open access: yesJ Comp Neurol
Changes through growth (ontogenetic) in the braincase of the eutyrannosaurian tyrannosauroid Gorgosaurus libratus are discussed. Most notably, brain cavity endocasts of immature Gorgosaurus are found to more clearly show details of the brain morphology than more mature individuals, a finding that has implications for improving dinosaur paleoneurology ...
Voris JT   +4 more
europepmc   +2 more sources

Ontogeny and miniaturization of Alvarezsauridae (Dinosauria, Theropoda)

open access: diamondBiological Communications, 2023
The ontogenetic status of the known specimens of alvarezsaurid theropod dinosaurs is revised. We present histological data that the holotype of Parvicursor remotus from the Upper Cretaceous Barungoyot Formation of Mongolia is not an adult individual, as previously thought, but a juvenile less than one year old.
Alexander O. Averianov   +2 more
openalex   +3 more sources

On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America

open access: greenZootaxa, 2023
We report the first occurrence in South America of spinosaurid specimens belonging to the clade Baryonychinae. The material comprises three tooth crowns recovered from the Lower Cretaceous (Berriasian–Valanginian) of the Feliz Deserto Formation, State of Sergipe, northeast Brazil.
Mauro B.S. Lacerda   +4 more
openalex   +4 more sources

New theropod (Tetanurae: Avetheropoda) material from the ‘mid’-Cretaceous Griman Greek Formation at Lightning Ridge, New South Wales, Australia [PDF]

open access: yesRoyal Society Open Science, 2019
The limited fossil record of Australian Cretaceous theropods is dominated by megaraptorids, reported from associated and isolated material from the Early Cretaceous of Victoria and the ‘Mid’-Cretaceous of central-north New South Wales and central ...
Tom Brougham   +2 more
doaj   +1 more source

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