Results 1 to 10 of about 19 (19)

Osteology of the unenlagiid theropod Neuquenraptor argentinus from the Late Cretaceous of Patagonia [PDF]

Acta Palaeontologica Polonica, 2017
Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. The only known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from Late Cretaceous beds of Neuquén ...
Federico Brissón Egli, Alexis M. Aranciaga Rolando, Federico L. Agnolín, Fernando E. Novas   +3 more
doaj   +1 more source

A New Specimen ofAustroraptor cabazaiNovas, Pol, Canale, Porfiri and Calvo, 2008 (Dinosauria, Theropoda, Unenlagiidae) from the Latest Cretaceous (Maastrichtian) of Río Negro, Argentina [PDF]

Ameghiniana, 2012
There were considerable differences in Late Cretaceous faunas of the Northern and Southern Hemispheres, although the differences were breaking down during Campanian and Maastrichtian times with the appearance of hadrosaurids in Antarctica and South America, and titanosaurids in North America.
Currie, Philip J., Paulina Carabajal, Ariana   +1 more
openaire   +2 more sources

Unenlagiid theropods: are they members of the Dromaeosauridae (Theropoda, Maniraptora)?

Anais da Academia Brasileira de Ciências, 2011
In the present paper we analyze the phylogenetic position of the derived Gondwanan theropod clade Unenlagiidae. Although this group has been frequently considered as deeply nested within Deinonychosauria and Dromaeosauridae, most of the features ...
Federico L. Agnolin, Fernando E. Novas
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

Anatomía comparada de los terópodos paravianos Unenlagiidae y sus implicancias en el origen de las aves

, 2023
Paraves es el clado de dinosaurios que cuenta con mayor número de especies, ya que por un lado agrupa a terópodos no-avianos extintos como Troodon y Velociraptor, y por otro lado a las aves, únicos dinosaurios vivientes (Avialae: Dinosauria, Gauthier 1986), donde se cuentan más de 11.000 especies.
openaire   +2 more sources

A Late Cretaceous dinosaur and crocodyliform faunal association-based on isolate teeth and osteoderms-at Cerro Fortaleza Formation (Campanian-Maastrichtian) type locality, Santa Cruz, Argentina. [PDF]

PLoS One, 2021
Paulina-Carabajal A, Barrios FT, Méndez AH, Cerda IA, Lee YN.   +4 more
europepmc   +1 more source

A large Megaraptoridae (Theropoda: Coelurosauria) from Upper Cretaceous (Maastrichtian) of Patagonia, Argentina. [PDF]

Sci Rep, 2022
Aranciaga Rolando AM, Motta MJ, Agnolín FL, Manabe M, Tsuihiji T, Novas FE.   +5 more
europepmc   +1 more source

A new paravian dinosaur from the Late Jurassic of North America supports a late acquisition of avian flight. [PDF]

PeerJ, 2019
Hartman S, Mortimer M, Wahl WR, Lomax DR, Lippincott J, Lovelace DM.   +5 more
europepmc   +1 more source

Theropod fauna from southern Australia indicates high polar diversity and climate-driven dinosaur provinciality. [PDF]

PLoS One, 2012
Benson RB, Rich TH, Vickers-Rich P, Hall M.   +3 more
europepmc   +1 more source

Postcranial skeletal anatomy of the holotype and referred specimens of Buitreraptor gonzalezorum Makovicky, Apesteguía and Agnolín 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia. [PDF]

PeerJ, 2018
Gianechini FA, Makovicky PJ, Apesteguía S, Cerda I.   +3 more
europepmc   +1 more source