Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?

Paraves is the theropod clade that includes Aves and their close relatives, the deinonychosaurians. The fossil record of basal paravians (currently ranging from Late Jurassic to Late Cretaceous) was mostly restricted to the Northern Hemisphere, but recent discoveries demonstrate their presence and h...

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Autores principales: Novas, Fernando Emilio, Agnolín, Federico Lisandro
Formato: Objeto de conferencia Resumen
Lenguaje:Inglés
Publicado: 2010
Materias:
Ciencias Naturales
Paleontología
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/16928
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-16928
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Paleontología
spellingShingle Ciencias Naturales
Paleontología
Novas, Fernando Emilio
Agnolín, Federico Lisandro
Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
topic_facet Ciencias Naturales
Paleontología
description Paraves is the theropod clade that includes Aves and their close relatives, the deinonychosaurians. The fossil record of basal paravians (currently ranging from Late Jurassic to Late Cretaceous) was mostly restricted to the Northern Hemisphere, but recent discoveries demonstrate their presence and high diversity also on the southern landmasses (e.g., South America, Madagascar). Unenlagiidae is a clade of Gondwanan paravians currently constituted by Unenlagia, Neuquenraptor, Buitreraptor, Austroraptor, and probably also Rahonavis. Although unenlagiids have been frequently considered as dromaeosaurid deinonychosaurs, most of the features supporting this interpretation are conflictive, at least. Modification of integrative databases produces significant changes in the topological distribution of taxa within Deinonychosauria, depicting unenlagiids outside this clade. Our analysis retrieves, in contrast, a monophyletic Avialae formed by Unenlagiidae plus Aves. Moreover, the purported Late Cretaceous Malagasy unenlagiid Rahonavis is here excluded from Unenlagiidae, but is nested within Aves. The phylogenetic position of Unenlagiidae as sister group of Aves invites to further investigate the peculiar anatomy of this theropod group, which rise questions about phylogenetic and functional significances on the origin and early evolution of flying birds.
format Objeto de conferencia
Resumen
author Novas, Fernando Emilio
Agnolín, Federico Lisandro
author_facet Novas, Fernando Emilio
Agnolín, Federico Lisandro
author_sort Novas, Fernando Emilio
title Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
title_short Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
title_full Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
title_fullStr Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
title_full_unstemmed Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae?
title_sort phylogenetic relationships of unenlagiidae theropods: are they members of dromaeosauridae?
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/16928
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AT agnolinfedericolisandro phylogeneticrelationshipsofunenlagiidaetheropodsaretheymembersofdromaeosauridae
bdutipo_str Repositorios
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