Results 91 to 100 of about 2,363 (235)

Morphological Variations within the Ontogeny of Deinonychus antirrhopus (Theropoda, Dromaeosauridae)

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. The primary goal of the research is to identify ontogenetic variations in this taxon.
William L Parsons, Kristen M Parsons
openaire   +4 more sources

ABELISAURID PEDAL UNGUALS FROM THE LATE CRETACEOUS OF INDIA

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
The ungual phalanges of theropod dinosaurs discovered in the Lameta Formation (Maastrichtian), central India, exhibit distinctive characters unknown in other theropods.
Fernando E. Novas, Saswati Bandyopadhyay
doaj  

A Thick-Skulled Troodontid Theropod from the Late Cretaceous of Mexico

open access: yesDiversity
Dinosaurs repeatedly evolved adaptations for sexual selection over their 150-million year history, including adaptations for display and intraspecific combat.
Hector E. Rivera-Sylva   +5 more
doaj   +1 more source

TERRESTRIAL ECOSYSTEMS ON THE MESOZOIC PERI-ADRIATIC CARBONATE PLATFORMS: THE VERTEBRATE EVIDENCE

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
The remains of Mesozoic carbonate platforms outcrop along the margins of the Adriatic Sea and the mountain chains surrounding them in Italy, Slovenia and Croatia.
Fabio M. Dalla Vecchia
doaj  

European ornithomimosaurs (Dinosauria, Theropoda)

open access: yes, 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. So far, the only known European ornithomimosaur is Pelecanimimus from the Barremian of Spain.
Allain, R.   +3 more
openaire   +1 more source

Juvenile specimen of Megaraptor (Dinosauria, Theropoda) sheds light about tyrannosauroid radiation

open access: bronze, 2014
Juan D. Porfiri   +5 more
openalex   +2 more sources

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