Results 11 to 20 of about 90 (58)

A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids. [PDF]

open access: yesProc Biol Sci, 2009
Fossils of a predatory dinosaur provide novel information about the evolution of unenlagiines, a poorly known group of dromaeosaurid theropods from Gondwana.
Novas FE   +4 more
europepmc   +3 more sources

New Dromaeosaurids (Dinosauria: Theropoda) from the lower cretaceous of Utah, and the evolution of the Dromaeosaurid tail. [PDF]

open access: yesPLoS One, 2012
Background: The Yellow Cat Member of the Cedar Mountain Formation (Early Cretaceous, Barremian? – Aptian) of Utah has yielded a rich theropod fauna, including the coelurosaur Nedcolbertia justinhofmanni, the therizinosauroid Falcarius utahensis, the ...
Senter P   +4 more
europepmc   +6 more sources

New information on Bonapartenykus (Alvarezsauridae: Theropoda) from the Allen Formation (middle Campanian-lower Maastrichtian) of Río Negro Province, Patagonia, Argentina clarifies the Patagonykinae body plan. [PDF]

open access: yesPLoS One
Alvarezsauria is a group of morphologically distinctive, medium- to small-sized later-diverging coelurosaurian theropod dinosaurs, whose record ranges from the Late Jurassic to the Late Cretaceous.
Meso JG   +7 more
europepmc   +3 more sources

Independent origins for powered flight in paravian dinosaurs? [PDF]

open access: yes, 2021
Política de acceso abierto tomada de:https://www.elsevier.com/about/policies-and-standards/open-access-licenses/userFeathered dinosaurs discovered during the last decades have illuminated the transition from land to air in these animals, underscoring a ...
Chiappe, Luis M.   +1 more
core   +1 more source

The Bauru Basin in São Paulo and its tetrapods [PDF]

open access: yes, 2022
Funding Information: The authors thank the editors of Derbyana, especially its Editor-in-Chief Silvio T. Hiruma, for the invitation to participate in this volume dedicated to “Advances in Paleontology”.
Barcelos, Lucas A.   +12 more
core   +1 more source

Small theropod teeth from the Late Cretaceous of the San Juan Basin, northwestern New Mexico and their implications for understanding latest Cretaceous dinosaur evolution. [PDF]

open access: yesPLoS One, 2014
Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian dinosaurs.
Williamson TE, Brusatte SL.
europepmc   +5 more sources

Isolated theropod teeth associated with a sauropod skeleton from the Late Cretaceous Allen Formation of Río Negro, Patagonia, Argentina [PDF]

open access: yes, 2021
The discovery of theropod shed teeth associated with sauropod remains is relatively common in Cretaceous deposits of Patagonia. However, only a handful of studies have thoroughly explored the phylogenetic affinities of the theropod dental material. Here,
Baiano, Mattia Antonio   +5 more
core   +5 more sources

Osteology of the unenlagiid theropod Neuquenraptor argentinus from the Late Cretaceous of Patagonia [PDF]

open access: yes, 2017
Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. The only known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from Late Cretaceous beds of Neuquén ...
Agnolin, Federico   +3 more
core   +2 more sources

A New Specimen of Autroraptor cabazai Novas, Pol. Canale, Porfiri and Calvo, 2008 (Dinosauria, Theropoda, Unenlagiidae) from the Latest Cretaceous (Maastrichtian) of Río Negro, Argentina [PDF]

open access: yes, 2012
There were considerable differences in Late Cretaceous faunas of the Northern and Southern Hemispheres, although the differences were breaking down during Campanian and Maastrichtian times with the appearance of hadrosaurids in Antarctica and South ...
Currie, Philip J.   +1 more
core   +1 more source

Re-evaluation of the Haarlem Archaeopteryx and the radiation of maniraptoran theropod dinosaurs [PDF]

open access: yes, 2017
Archaeopteryx is an iconic fossil that has long been pivotal for our understanding of the origin of birds. Remains of this important taxon have only been found in the Late Jurassic lithographic limestones of Bavaria, Germany.
Foth, Christian, Rauhut, Oliver W. M.
core   +2 more sources

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