Results 41 to 50 of about 2,538 (164)

The first Jurassic theropod from the Sergi Formation, Jatobá Basin, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2021
Archosaur osteological remains are abundant in Brazil, particularly from the Triassic and Cretaceous strata, but in Jurassic, the record is predominantly represented by ichnofossils.
KAMILA L.N. BANDEIRA   +5 more
doaj   +1 more source

A new vertebrate fauna from the Lower Cretaceous Holly Creek Formation of the Trinity Group, southwest Arkansas, USA [PDF]

open access: yesPeerJ, 2021
We present a previously discovered but undescribed late Early Cretaceous vertebrate fauna from the Holly Creek Formation of the Trinity Group in Arkansas.
Celina A. Suarez   +6 more
doaj   +2 more sources

Postcranial osteology of the first early-stage juvenile skeleton of Plateosaurus trossingensis from the Norian of Frick, Switzerland [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Owing to monospecific mass-accumulation sites in Central Europe, the early-branching sauropodomorph Plateosaurus has one of the best fossil records among dinosaurs. Despite this, early-stage juveniles have been conspicuously absent.
Darius Nau   +3 more
doaj   +1 more source

New theropod (Tetanurae: Avetheropoda) material from the ‘mid’-Cretaceous Griman Greek Formation at Lightning Ridge, New South Wales, Australia [PDF]

open access: yesRoyal Society Open Science, 2019
The limited fossil record of Australian Cretaceous theropods is dominated by megaraptorids, reported from associated and isolated material from the Early Cretaceous of Victoria and the ‘Mid’-Cretaceous of central-north New South Wales and central ...
Tom Brougham   +2 more
doaj   +1 more source

The enamel microstructure of Manidens condorensis: New hypotheses on the ancestral state and evolution of enamel in Ornithischia [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Previous studies on enamel microstructure in Ornithischia have focused on derived lineages of this clade based on species from the northern hemisphere.
Marcos G. Becerra, Diego Pol
doaj   +1 more source

A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe

open access: yesScientific Reports, 2021
A characteristic fauna of dinosaurs and other vertebrates inhabited the end-Cretaceous European archipelago, some of which were dwarves or had other unusual features likely related to their insular habitats.
A. Sellés   +4 more
semanticscholar   +1 more source

A comprehensive anatomical and phylogenetic evaluation of Dilophosaurus wetherilli (Dinosauria, Theropoda) with descriptions of new specimens from the Kayenta Formation of northern Arizona

open access: yesJournal of Paleontology, 2020
. Dilophosaurus wetherilli was the largest animal known to have lived on land in North America during the Early Jurassic. Despite its charismatic presence in pop culture and dinosaurian phylogenetic analyses, major aspects of the skeletal anatomy ...
A. Marsh, T. Rowe
semanticscholar   +1 more source

Osteohistology of the hyperelongate hemispinous processes of Amargasaurus cazaui (Dinosauria: Sauropoda): Implications for soft tissue reconstruction and functional significance

open access: yesJournal of Anatomy, 2022
Dicraeosaurid sauropods are iconically characterized by the presence of elongate hemispinous processes in presacral vertebrae. These hemispinous processes can show an extreme degree of elongation, such as in the Argentinean forms Amargasaurus cazaui ...
I. Cerda   +3 more
semanticscholar   +1 more source

Descripción de las vértebras cervicales de Galvesaurus herreroi Barco, Canudo, Cuenca-bescos & Ruiz-Omeñaca, 2005 (Dinosauria, Sauropoda) del tránsito Jurásico-Cretácico en Galve (Teruel, Aragón, España)

open access: yes, 2021
En este trabajo se describen en detalle las vértebras y costillas cervicales del dinosaurio saurópodo Galvesaurus herreroi. El ejemplar proviene de la Formación Villar del Arzobispo (Titónico-Berriasiense medio?) de Galve (Sistema Ibérico, Teruel, Aragón,
José Raúl Rodríguez Rodríguez   +2 more
semanticscholar   +1 more source

A new styracosternan hadrosauroid (Dinosauria: Ornithischia) from the Early Cretaceous of Portell, Spain

open access: yesPLoS ONE, 2021
A new styracosternan ornithopod genus and species is described based on the right dentary of a single specimen from the Mirambell Formation (Early Cretaceous, early Barremian) at the locality of Portell, (Castellón, Spain).
A. Santos-Cubedo   +3 more
semanticscholar   +1 more source

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