Results 101 to 110 of about 3,472 (207)

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

Endocranial Morphology of the Extinct North American Lion (Panthera atrox) [PDF]

open access: yes, 2017
The extinct North American lion (Panthera atrox) is one of the largest felids (Mammalia, Carnivora) to have ever lived, and it is known from a plethora of incredibly well-preserved remains.
Cuff, A R, Goswami, A, Stockey, C
core   +2 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  

Ichnological evidence of Megalosaurid Dinosaurs crossing Middle Jurassic tidal flats [PDF]

open access: yes, 2016
A new dinosaur tracksite in the Vale de Meios quarry (Serra de Aire Formation, Bathonian, Portugal) preserves more than 700 theropod tracks. They are organized in at least 80 unidirectional trackways arranged in a bimodal orientation pattern (W/NW and E ...
Castanera, D.   +5 more
core   +5 more sources

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  

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

Mid-mantle deformation inferred from seismic anisotropy [PDF]

open access: yes, 2002
With time, convective processes in the Earth's mantle will tend to align crystals, grains and inclusions. This mantle fabric is detectable seismologically, as it produces an anisotropy in material properties—in particular, a directional dependence in ...
A Yeganeh-Haeri   +34 more
core   +4 more sources

A re-evaluation of the enigmatic dinosauriform Caseosaurus crosbyensis from the Late Triassic of Texas, USA and its implications for early dinosaur evolution [PDF]

open access: yes
The holotype specimen of the Late Triassic dinosauriform Caseosaurus crosbyensis is redescribed and evaluated phylogenetically for the first time, providing new anatomical information and data on the earliest dinosaurs and their evolution within the ...
Baron, Matthew G., Williams, Megan
core   +1 more source

Dinosaurs (Reptilia, Archosauria) at Museo de La Plata, Argentina: annotated catalogue of the type material and Antarctic specimens [PDF]

open access: yes, 2013
A commented-illustrated catalogue of non-avian dinosaurs housed at Museo de La Plata, Argentina is presented. This represents the first commented catalogue of the La Plata Museum dinosaurs to be published.
Otero, Alejandro   +1 more
core   +1 more source

A new theropod dinosaur from the Early Jurassic of South Africa and its implications for the early evolution of theropods [PDF]

open access: yes, 2005
A new theropod, Dracovenator regenti, from the upper Elliot Formation is described, based upon a fragmentary skull. It can be diagnosed on the basis of a bilobed fossa on the lateral surface of the premaxilla that is connected to the alveolar margin by ...
Yates, Adam M.
core  

Home - About - Disclaimer - Privacy