Results 31 to 40 of about 239 (114)

Multivariate and Cladistic Analyses of Isolated Teeth Reveal Sympatry of Theropod Dinosaurs in the Late Jurassic of Northern Germany. [PDF]

PLoS ONE, 2016
Remains of theropod dinosaurs are very rare in Northern Germany because the area was repeatedly submerged by a shallow epicontinental sea during the Mesozoic.
Oliver Gerke, Oliver Wings
doaj   +1 more source

The phylogenetic affinities of the bizarre Late Cretaceous Romanian theropod Balaur bondoc (Dinosauria, Maniraptora): dromaeosaurid or flightless bird? [PDF]

PeerJ, 2015
The exceptionally well-preserved Romanian dinosaur Balaur bondoc is the most complete theropod known to date from the Upper Cretaceous of Europe. Previous studies of this remarkable taxon have included its phylogenetic interpretation as an aberrant ...
Andrea Cau, Tom Brougham, Darren Naish
doaj   +2 more sources

Morphological disparity in theropod jaws: comparing discrete characters and geometric morphometrics

Palaeontology, Volume 63, Issue 2, Page 283-299, March 2020., 2020
Abstract Disparity, the diversity of form and function of organisms, can be assessed from cladistic or phenetic characters, and from discrete characters or continuous characters such as landmarks, outlines, or ratios. But do these different methods of assessing disparity provide comparable results?
Joep Schaeffer, Michael J. Benton, Emily J. Rayfield, Thomas L. Stubbs, Kenneth Angielczyk   +4 more
wiley   +1 more source

A new small deinonychosaur (Dinosauria: Theropoda) from the Late Cretaceous of Patagônia, Argentina

Anais da Academia Brasileira de Ciências, 2011
Here we report on a new small deinonychosaurian theropod, Pamparaptor micros gen. et sp. nov., from the Late Cretaceous of Patagônia, Argentina. Pamparaptor micros exhibits a pedal structure previously unknown among South Américan deinonychosaurians. The
Juan D. Porfiri, Jorge O. Calvo, Domenica dos Santos   +2 more
doaj   +1 more source

Paravian Phylogeny and the Dinosaur-Bird Transition: An Overview

Frontiers in Earth Science, 2019
Recent years witnessed the discovery of a great diversity of early birds as well as closely related non-avian theropods, which modified previous conceptions about the origin of birds and their flight. We here present a review of the taxonomic composition
Federico L. Agnolin, Federico L. Agnolin, Federico L. Agnolin, Matias J. Motta, Matias J. Motta, Federico Brissón Egli, Federico Brissón Egli, Gastón Lo Coco, Gastón Lo Coco, Fernando E. Novas, Fernando E. Novas   +10 more
doaj   +1 more source

Skeletal completeness of the non‐avian theropod dinosaur fossil record

Palaeontology, Volume 62, Issue 6, Page 951-981, November 2019., 2019
Abstract Non‐avian theropods were a highly successful clade of bipedal, predominantly carnivorous, dinosaurs. Their diversity and macroevolutionary patterns have been the subject of many studies. Changes in fossil specimen completeness through time and space can bias our understanding of macroevolution.
Daniel D. Cashmore, Richard J. Butler, Roger Benson   +2 more
wiley   +1 more source

Unenlagiinae revisited: dromaeosaurid theropods from South América

Anais da Academia Brasileira de Ciências, 2011
Over the past two decades, the record of South American unenlagiine dromaeosaurids was substantially increased both in quantity as well as in quality of specimens.
Federico A. Gianechini, Sebastian Apesteguia   +1 more
doaj   +1 more source

The geometry of taking flight: Limb morphometrics in Mesozoic theropods

Journal of Morphology, Volume 276, Issue 2, Page 152-166, February 2015., 2015
ABSTRACT Theropoda was one of the most successful dinosaurian clades during the Mesozoic and has remained a dominant component of faunas throughout the Cenozoic, with nearly 10,000 extant representatives. The discovery of Archaeopteryx provides evidence that avian theropods evolved at least 155 million years ago and that more than half of the tenure of
Brandon P. Hedrick, Phillip L. Manning, Eric R. Lynch, Samantha A. Cordero, Peter Dodson   +4 more
wiley   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods

Papers in Palaeontology, Volume 10, Issue 6, November/December 2024.
Abstract The Lower Cretaceous Wealden Supergroup of southern England yields a diverse assemblage of theropod dinosaurs, its taxa being represented by fragments in addition to some of the most informative associated skeletons of the European Mesozoic. Spinosaurids, neovenatorid allosauroids, tyrannosauroids and dromaeosaurids are among reported Wealden ...
Chris T. Barker, Lucy Handford, Darren Naish, Simon Wills, Christophe Hendrickx, Phil Hadland, Dave Brockhurst, Neil J. Gostling   +7 more
wiley   +1 more source