Results 1 to 10 of about 39 (37)

Unenlagiid theropods: are they members of the Dromaeosauridae (Theropoda, Maniraptora)?

open access: yesAnais Da Academia Brasileira De Ciencias, 2011
In the present paper we analyze the phylogenetic position of the derived Gondwanan theropod clade Unenlagiidae. Although this group has been frequently considered as deeply nested within Deinonychosauria and Dromaeosauridae, most of the features ...
Federico L. Agnolin, Fernando Novas
exaly   +3 more sources

Skull of a dromaeosaurid dinosaur Shri devi from the Upper Cretaceous of the Gobi Desert suggests convergence to the North American forms

open access: yesActa Palaeontologica Polonica, 2023
Numerous dromaeosaurid taxa recovered from the Upper Cretaceous strata of the Gobi Desert raise questions over niche partitioning among closely related species.
ŁUKASZ CZEPIŃSKI
doaj   +1 more source

Iridescent plumage in a juvenile dromaeosaurid theropod dinosaur

open access: yesActa Palaeontologica Polonica, 2023
Colour reconstructions have provided new insights into the lives of dinosaurs and other extinct animals, by predicting colouration patterns from fossilised pigment-bearing organelles called melanosomes.
ANGUS D. CROUDACE   +4 more
doaj   +1 more source

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

open access: yesPLoS ONE, 2012
BackgroundThe 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 ...
Phil Senter   +4 more
doaj   +1 more source

The furculae of the dromaeosaurid dinosaur Dakotaraptor steini are trionychid turtle entoplastra [PDF]

open access: yesPeerJ, 2016
Dakotaraptor steini is a recently described dromaeosaurid dinosaur from the Upper Cretaceous (Maastrichtian) Hell Creek Formation of South Dakota. Included within the D.
Victoria M. Arbour   +4 more
doaj   +2 more sources

The predatory ecology of Deinonychus and the origin of flapping in birds. [PDF]

open access: yesPLoS ONE, 2011
Most non-avian theropod dinosaurs are characterized by fearsome serrated teeth and sharp recurved claws. Interpretation of theropod predatory ecology is typically based on functional morphological analysis of these and other physical features.
Denver W Fowler   +3 more
doaj   +1 more source

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   +1 more source

Morphological variations within the ontogeny of Deinonychus antirrhopus (Theropoda, Dromaeosauridae). [PDF]

open access: yesPLoS ONE, 2015
This research resulted from the determination that MCZ 8791 is a specimen of Deinonychus antirrhopus between one and two years of age and that the morphological variations within particular growth stages of this taxon have yet to be described.
William L Parsons, Kristen M Parsons
doaj   +1 more source

Postcranial skeletal anatomy of the holotype and referred specimens of Buitreraptor gonzalezorum Makovicky, Apesteguía and Agnolín 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia [PDF]

open access: yesPeerJ, 2018
Here we provide a detailed description of the postcranial skeleton of the holotype and referred specimens of Buitreraptor gonzalezorum. This taxon was recovered as an unenlagiine dromaeosaurid in several recent phylogenetic studies and is the best ...
Federico A. Gianechini   +3 more
doaj   +2 more sources

Redescription and affinities of Hulsanpes perlei (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia [PDF]

open access: yesPeerJ, 2018
Hulsanpes perlei is an enigmatic theropod dinosaur from the Baruungoyot Formation (?mid- to upper Campanian, Upper Cretaceous) of Mongolia. It was discovered in 1970, during the third Polish-Mongolian paleontological expedition to the Nemegt Basin.
Andrea Cau, Daniel Madzia
doaj   +2 more sources

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