Coverart for item
The Resource Avian ancestors : a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae, Federico L. Agnolín, Fernando E. Novas

Avian ancestors : a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae, Federico L. Agnolín, Fernando E. Novas

Label
Avian ancestors : a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae
Title
Avian ancestors
Title remainder
a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae
Statement of responsibility
Federico L. Agnolín, Fernando E. Novas
Creator
Contributor
Subject
Language
eng
Summary
Although consensus exists among researchers 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 last 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 four-winged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. 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
Member of
http://library.link/vocab/creatorName
Agnolín, Federico L
Dewey number
598.13/8
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
http://library.link/vocab/relatedWorkOrContributorName
Novas, Fernando E
Series statement
SpringerBriefs in earth system sciences, SpringerBriefs South American and the Southern Hemisphere,
http://library.link/vocab/subjectName
  • Birds
  • Microraptor
  • Paleontology
Label
Avian ancestors : a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae, Federico L. Agnolín, Fernando E. Novas
Instantiates
Publication
Antecedent source
unknown
Bibliography note
Includes bibliographical references
Color
multicolored
Contents
  • Anchiornis + Xiaotingia +Avialae clade
  • Anchiornis + Xiaotingia clade
  • Avialae Gauthier, 1986
  • Ornithurae Haeckel, 1816
  • Avebrevicauda Paul, 2002
  • Oviraptorosauria + Scansoriopterygidae clade
  • 4.
  • Uncertain Averaptoran Theropods
  • Introduction
  • Luanchuanraptor henanensis
  • 1.
  • Hulsanpes perlei
  • Shanag agile
  • Tianyuraptor ostromi
  • Mahakala omnogova
  • Jinfengopteryx elegans
  • Unquillosaurus ceiballi
  • Pamparaptor micros
  • European Dromaeosaurids
  • 5.
  • Discussion
  • Introduction
  • Evolution of Feathers and Wings Among Basal Paravians
  • Osteological and Integumental Modifications Related to the Origin of Flight
  • Body Size Increase and Loss of Flying Capabilities Among Paravians
  • Independent Origin of Flying Capabilities Among Paravians
  • Averaptoran Radiation and Center of Origin of Birds
  • Appendix 1: Character List
  • Appendix 2: Re-Scored Data from Xu et al. (2008); Hu et al. (2009), and Agnolín and Novas (2011) Data Matrixes
  • Appendix 3: Character Diagnoses for Selected Clades
  • 2. Materials and Methods
  • 3. Systematic Palaeontology
  • Paraves Sereno, 1997
  • Eumaniraptora Padian, Hutchinson, and Holtz, 1999
  • Averaptora new clade
  • Unenlagiidae + Avialae clade
Control code
ocn829929880
Dimensions
unknown
Extent
1 online resource
File format
unknown
Form of item
online
Isbn
9789400756366
Level of compression
unknown
Other control number
10.1007/978-94-007-5637-3
Quality assurance targets
not applicable
Reformatting quality
unknown
Sound
unknown sound
Specific material designation
remote
System control number
(OCoLC)829929880
Label
Avian ancestors : a review of the phylogenetic relationships of the theropods unenlagiidae, microraptoria, anchiornis and scansoriopterygidae, Federico L. Agnolín, Fernando E. Novas
Publication
Antecedent source
unknown
Bibliography note
Includes bibliographical references
Color
multicolored
Contents
  • Anchiornis + Xiaotingia +Avialae clade
  • Anchiornis + Xiaotingia clade
  • Avialae Gauthier, 1986
  • Ornithurae Haeckel, 1816
  • Avebrevicauda Paul, 2002
  • Oviraptorosauria + Scansoriopterygidae clade
  • 4.
  • Uncertain Averaptoran Theropods
  • Introduction
  • Luanchuanraptor henanensis
  • 1.
  • Hulsanpes perlei
  • Shanag agile
  • Tianyuraptor ostromi
  • Mahakala omnogova
  • Jinfengopteryx elegans
  • Unquillosaurus ceiballi
  • Pamparaptor micros
  • European Dromaeosaurids
  • 5.
  • Discussion
  • Introduction
  • Evolution of Feathers and Wings Among Basal Paravians
  • Osteological and Integumental Modifications Related to the Origin of Flight
  • Body Size Increase and Loss of Flying Capabilities Among Paravians
  • Independent Origin of Flying Capabilities Among Paravians
  • Averaptoran Radiation and Center of Origin of Birds
  • Appendix 1: Character List
  • Appendix 2: Re-Scored Data from Xu et al. (2008); Hu et al. (2009), and Agnolín and Novas (2011) Data Matrixes
  • Appendix 3: Character Diagnoses for Selected Clades
  • 2. Materials and Methods
  • 3. Systematic Palaeontology
  • Paraves Sereno, 1997
  • Eumaniraptora Padian, Hutchinson, and Holtz, 1999
  • Averaptora new clade
  • Unenlagiidae + Avialae clade
Control code
ocn829929880
Dimensions
unknown
Extent
1 online resource
File format
unknown
Form of item
online
Isbn
9789400756366
Level of compression
unknown
Other control number
10.1007/978-94-007-5637-3
Quality assurance targets
not applicable
Reformatting quality
unknown
Sound
unknown sound
Specific material designation
remote
System control number
(OCoLC)829929880

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