Results 41 to 50 of about 3,472 (207)

Cranial anatomy and stratigraphy of a new specimen of the tyrannosaurine dinosaur Daspletosaurus from the Judith River Formation of Central Montana, USA [PDF]

open access: yesActa Palaeontologica Polonica
The tyrannosaurine Daspletosaurus contains three recognized species from the Campanian of Montana and Alberta: Daspletosaurus torosus, Daspletosaurus wilsoni, and Daspletosaurus horneri. The recently named D. wilsoni has been proposed to represent a
ETHAN WARNER-COWGILL   +3 more
doaj   +1 more source

Diente de un gran dinosaurio terópodo (Allosauroidea) de la Formación Villar del Arzobispo (Titónico-Berriasiense) de Riodeva (España)

open access: yesEstudios Geologicos, 2009
Se describe un diente de dinosaurio terópodo de 98,3 mm de longitud apical hallado en el término municipal de Riodeva (Teruel). El diente ha sido localizado de forma aislada en un nivel de microconglomerados perteneciente a la Formación Villar del ...
R. Royo-Torres, A. Cobos, L. Alcalá
doaj   +1 more source

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

open access: yes, 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.
Brusatte, Stephen   +3 more
core   +3 more sources

Taxonomic and stratigraphic update of the material historically attributed to Megalosaurus from Portugal [PDF]

open access: yesActa Palaeontologica Polonica
The first paleontological works on Mesozoic vertebrates from Portugal, carried out from the end of the 19th and the first half of the 20th century, provided the discovery of significant collections of vertebrate fossils.
Elisabete Malafaia   +4 more
doaj   +1 more source

A newly recognized theropod assemblage from the Lewisville Formation (Woodbine Group; Cenomanian) and its implications for understanding Late Cretaceous Appalachian terrestrial ecosystems [PDF]

open access: yesPeerJ, 2022
While the terrestrial fossil record of the mid-Cretaceous interval (Aptian to Cenomanian) in North America has been poorly studied, the recent focus on fossil localities from the western United States has offered a more detailed picture of vertebrate ...
Christopher R. Noto   +3 more
doaj   +2 more sources

The first ornithomimosaur remains from Germany [PDF]

open access: yesActa Palaeontologica Polonica
Ornithomimosauria is a group of coelurosaurs primarily known from the Cretaceous of Asia and North America. The European record is comparatively sparse, with Pelecanimimus from the Lower Cretaceous of Spain being the only unequivocal representative. Here,
Denis Theda   +3 more
doaj   +1 more source

Immature skulls of the theropod dinosaur Coelophysis bauri from Ghost Ranch, New Mexico [PDF]

open access: yesActa Palaeontologica Polonica
The theropod dinosaur Coelophysis bauri is well known from the famous Rhaetian, Late Triassic mass death assemblage from the Coelophysis Quarry at Ghost Ranch, New Mexico. This research describes the skulls of two small individuals of C. bauri.
Jeb E. Bugos, Skye N. McDavid
doaj   +1 more source

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

open access: yes, 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

The Biggest Megaraptoridae (Theropoda: Coelurosauria) of South America [PDF]

open access: yes, 2021
Abstract Megaraptorans are a theropod clade distributed in former Gondwana landmasses and Asia. Most members of the clade are known from early Cretaceous to Turonian times whereas Maastrichtian megaraptorans are known just from isolated and poorly informative remains.
Alexis M. Aranciaga Rolando   +5 more
openaire   +1 more source

Abelisauroidea (Theropoda, Dinosauria) from Africa: a review of the fossil record [PDF]

open access: yesPapéis Avulsos de Zoologia, 2023
The Continental African abelisauroid theropod dinosaur fossil record from the Jurassic-Cretaceous periods is becoming increasingly better understood, and offers great insight into the evolution and biogeography of this long-lived group of carnivores ...
André Luis de Souza-Júnior   +4 more
doaj   +1 more source

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