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dc.contributor.author
Agnolin, Federico
dc.contributor.author
Novas, Fernando Emilio
dc.date.available
2021-06-10T12:11:10Z
dc.date.issued
2013
dc.identifier.citation
Agnolin, Federico; Novas, Fernando Emilio; Avian ancestors: A Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae; Springer Verlag Berlín; 1; 2013; 96
dc.identifier.isbn
978-94-007-5636-6
dc.identifier.uri
http://hdl.handle.net/11336/133586
dc.description.abstract
Although consensus exists among authors that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds. The past 20 years witnessed the discovery of a wide array of avian-like theropods that has considerably amplified the anatomical disparity among deinonychosaurians, some of which resemble Archaeopteryx more than Deinonychus. Among these newly discovered theropods that show remarkable bird-like characteristics are the fourwinged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. Xiaotingia, Anchiornis, and Archaeopteryx are regarded as more nearly related to birds, rather than to Dromaeosauridae or Troodontidae. Moreover, a bizarre group of minute-sized coelurosaurs, the Scansoriopterygidae, also exhibits some avian similarities that lead some authors to interpret them as more closely related to birds than other dinosaurs. With the aim to explore the phylogenetic relationships of these coelurosaurians and birds, we merged recently published integrative databases, resulting in significant changes in the topological distribution of taxa within Paraves. We present evidence that Dromaeosauridae, Microraptoria, Unenlagiidae, and Anchiornis + Xiaotingia form successive sister taxa of Aves, and that the Scansoriopterygidae are basal coelurosaurians not closely related to birds. The implications in the evolutionary sequence of anatomical characters leading to birds, including the origin of flight, are also considered in light of this new phylogenetic hypothesis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Verlag Berlín
dc.rights
info:eu-repo/semantics/closedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Microraptoria
dc.subject
Unenlagiidae
dc.subject
Anchiornis
dc.subject
Scansoriopterygidae
dc.subject
Origin of birds and flight
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Avian ancestors: A Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/book
dc.type
info:ar-repo/semantics/libro
dc.date.updated
2021-06-04T17:08:02Z
dc.journal.volume
1
dc.journal.pagination
96
dc.journal.pais
Países Bajos
dc.journal.ciudad
Dordretch
dc.description.fil
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.springer.com/gp/book/9789400756366
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/978-94-007-5637-3
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