000 04107nam a22005055i 4500
001 978-94-007-5637-3
003 DE-He213
005 20140220082938.0
007 cr nn 008mamaa
008 130228s2013 ne | s |||| 0|eng d
020 _a9789400756373
_9978-94-007-5637-3
024 7 _a10.1007/978-94-007-5637-3
_2doi
050 4 _aQE701-760
072 7 _aRBX
_2bicssc
072 7 _aSCI054000
_2bisacsh
082 0 4 _a560
_223
100 1 _aAgnolín, Federico L.
_eauthor.
245 1 0 _aAvian Ancestors
_h[electronic resource] :
_bA Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae /
_cby Federico L. Agnolín, Fernando E. Novas.
264 1 _aDordrecht :
_bSpringer Netherlands :
_bImprint: Springer,
_c2013.
300 _aX, 96 p. 18 illus., 6 illus. in color.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSpringerBriefs in Earth System Sciences,
_x2191-589X
505 0 _aIntroduction -- Institutional abbreviations -- Comparison: general information about the main taxa to be compared in the present paper -- Phylogenetic analysis: review of available phylogenetic hypotheses about the origin of birds, discussing their respective logical bases and discussion of characters used for their support -- Systematic Paleontology: systematic arrangement -- Discussion -- 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 -- Bibliography -- Character list.
520 _aAlthough 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.
650 0 _aGeography.
650 0 _aPaleontology.
650 0 _aEvolution (Biology).
650 0 _aMorphology (Animals).
650 1 4 _aEarth Sciences.
650 2 4 _aPaleontology.
650 2 4 _aAnimal Systematics/Taxonomy/Biogeography.
650 2 4 _aEvolutionary Biology.
650 2 4 _aAnimal Anatomy / Morphology / Histology.
700 1 _aNovas, Fernando E.
_eauthor.
710 2 _aSpringerLink (Online service)
773 0 _tSpringer eBooks
776 0 8 _iPrinted edition:
_z9789400756366
830 0 _aSpringerBriefs in Earth System Sciences,
_x2191-589X
856 4 0 _uhttp://dx.doi.org/10.1007/978-94-007-5637-3
912 _aZDB-2-EES
999 _c99675
_d99675