Morphological variations within the ontogeny of Deinonychus antirrhopus (Theropoda, Dromaeosauridae). [PDF]
PLoS 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 +7 more sources
New information on the Hind limb feathering, soft tissues and skeleton of Microraptor (Theropoda: Dromaeosauridae) [PDF]
BMC Ecology and EvolutionBackground Microraptor is known as the most significant example of extended feathering on the legs of a paravian, both fossil and modern. Its striking difference with most paravians contributes to the multiple theories on the function of its conspicuous ...
Matthieu Chotard +12 more
doaj +6 more sources
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]
PeerJ, 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 +8 more sources
Unenlagiid theropods: are they members of the Dromaeosauridae (Theropoda, Maniraptora)? [PDF]
Anais da Academia Brasileira de Ciências, 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 E. Novas
doaj +7 more sources
The first juvenile dromaeosaurid (Dinosauria: Theropoda) from Arctic Alaska. [PDF]
PLoS 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 +2 more sources
Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina [PDF]
BMC Ecology and EvolutionBackground Unenlagiine paravians are among the most relevant Gondwanan theropod dinosaur clades for understanding the origin of birds, yet their fossil record remains incomplete, with most taxa being represented by fragmentary material and/or separated ...
Juan D. Porfiri +5 more
doaj +2 more sources
The endocranium and trophic ecology of Velociraptor mongoliensis. [PDF]
J Anat, 2020 We reconstructed the brain cavity and inner ear of Velociraptor to better understand its lifestyle and hunting abilities. We found brain structures that are present in modern birds, indicating an exceptional sense of balance and agility. The inner ear also closely resembles that of flightless birds, and Velociraptor had a similar hearing ability to ...
King JL +4 more
europepmc +2 more sources
Morphological disparity and structural performance of the dromaeosaurid skull informs ecology and evolutionary history [PDF]
BMC Ecology and EvolutionNon-avialan theropod dinosaurs had diverse ecologies and varied skull morphologies. Previous studies of theropod cranial morphology mostly focused on higher-level taxa or characteristics associated with herbivory.
Yuen Ting Tse +2 more
doaj +2 more sources
Redescription and affinities of Hulsanpes perlei (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia [PDF]
PeerJ, 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 +3 more sources
New Dromaeosaurids (Dinosauria: Theropoda) from the lower cretaceous of Utah, and the evolution of the Dromaeosaurid tail. [PDF]
PLoS 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 +2 more sources