Results 91 to 100 of about 1,568 (192)

Therizinosauroidea (Dinosauria: Theropoda) from the Upper Cretaceous of Uzbekistan [PDF]

open access: yesCretaceous Research, 2016
Abstract Skeletal remains of indeterminate therizinosauroid dinosaurs are present in the Cenomanian Khodzhakul Formation and common in the Turonian Bissekty Formation of Uzbekistan. At least two taxa are present in the Bissekty Formation based on different frontal and humerus morphotypes.
Alexander O. Averianov   +2 more
openaire   +2 more sources

Patterns of variation in fleshy diaspore size and abundance from Late Triassic–Oligocene

open access: yesBiological Reviews, Volume 99, Issue 2, Page 430-457, April 2024.
ABSTRACT Vertebrate‐mediated seed dispersal is a common attribute of many living plants, and variation in the size and abundance of fleshy diaspores is influenced by regional climate and by the nature of vertebrate seed dispersers among present‐day floras.
Duhita Naware, Roger Benson
wiley   +1 more source

Lower rotational inertia and larger leg muscles indicate more rapid turns in tyrannosaurids than in other large theropods [PDF]

open access: yesPeerJ, 2019
Synopsis Tyrannosaurid dinosaurs had large preserved leg muscle attachments and low rotational inertia relative to their body mass, indicating that they could turn more quickly than other large theropods.
Eric Snively   +11 more
doaj   +2 more sources

First record of Megaraptora (Theropoda, Neovenatoridae) from Brazil

open access: yesComptes Rendus Palevol, 2012
Abstract An isolated caudal vertebral centrum of a theropod dinosaur was discovered in the Bauru Basin (Late Cretaceous) of Brazil, in the Maastrichtian Sao Jose do Rio Preto Formation. The vertebral centrum has pneumatic features that are similar to those in the megaraptoran theropods Aerosteon , Megaraptor , and Orkoraptor .
Méndez, Ariel Hernán   +2 more
openaire   +3 more sources

The dentition of Megalosauridae (Theropoda: Dinosauria) [PDF]

open access: yesActa Palaeontologica Polonica, 2014
Theropod teeth are particularly abundant in the fossil record and frequently reported in the literature. Yet, the dentition of many theropods has not been described comprehensively, omitting details on the denticle shape, crown ornamentations and enamel texture.
Octávio Mateus   +2 more
openaire   +2 more sources

A proxy for brain‐to‐endocranial cavity index in non‐neornithean dinosaurs and other extinct archosaurs

open access: yesJournal of Comparative Neurology, Volume 532, Issue 3, March 2024.
Illustration of the endocranial doming, which can provide a proxy for the brain‐to‐endocranial cavity index, using the endocast of an adult of the iguanodont dinosaur Proa valdearinnoensis as an example. Abstract Although the brain fills nearly the entire cranial cavity in birds, it can occupy a small portion of it in crocodilians.
Fabien Knoll   +2 more
wiley   +1 more source

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. ParsonsW.L. Parsons   +1 more
openaire   +5 more sources

Restos de Alvarezsauridae (Theropoda, Coelurosauria) en la Formación Alien (Campaniano-Maastrichtiano), en Salitral Ojo de Agua, Provincia de Río Negro, Argentina Remains of Alvarezsauridae (Theropoda, Coelurosauria) in the Alien Formation (Campanian-Maastrichthian), in Salitral Ojo de Agua, Río Negro Province, Argentina

open access: yesAndean Geology, 2009
Se presentan nuevos restos provenientes de estratos campaniano-maastrichtianos de la Formación Alien, en Salitral Ojo de Agua (Río Negro, Argentina), los cuales son asignables a Alvarezsauridae indet.
Leonardo Salgado   +3 more
doaj  

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  

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  

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