LEADER 05072nam 22007575 450 001 9910437948603321 005 20200705185850.0 010 $a94-007-5637-2 024 7 $a10.1007/978-94-007-5637-3 035 $a(CKB)3400000000125634 035 $a(EBL)1083606 035 $a(OCoLC)890529532 035 $a(SSID)ssj0000878513 035 $a(PQKBManifestationID)11560737 035 $a(PQKBTitleCode)TC0000878513 035 $a(PQKBWorkID)10836600 035 $a(PQKB)11459458 035 $a(DE-He213)978-94-007-5637-3 035 $a(MiAaPQ)EBC1083606 035 $a(PPN)168341417 035 $a(EXLCZ)993400000000125634 100 $a20130228d2013 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aAvian Ancestors $eA Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae /$fby Federico Agnolin, Fernando E. Novas 205 $a1st ed. 2013. 210 1$aDordrecht :$cSpringer Netherlands :$cImprint: Springer,$d2013. 215 $a1 online resource (100 p.) 225 1 $aSpringerBriefs in Earth System Sciences,$x2191-589X 300 $aDescription based upon print version of record. 311 $a94-007-5636-4 320 $aIncludes bibliographical references. 327 $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. 330 $aAlthough consensus exists among researchers that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds. The last 20 years witnessed the discovery of a wide array of avian-like theropods that has considerably amplified the anatomical disparity among deinonychosaurians, some of which resemble Archaeopteryx more than Deinonychus. Among these newly discovered theropods that show remarkable bird-like characteristics are the four-winged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. A bizarre group of minute-sized coelurosaurs, the Scansoriopterygidae, also exhibits some avian similarities that lead some authors to interpret them as more closely related to birds than other dinosaurs. With the aim to explore the phylogenetic relationships of these coelurosaurians and birds, we merged recently published integrative databases, resulting in significant changes in the topological distribution of taxa within Paraves. We present evidence that Dromaeosauridae, Microraptoria, Unenlagiidae, and Anchiornis + Xiaotingia form successive sister taxa of Aves, and that the Scansoriopterygidae are basal coelurosaurians not closely related to birds. The implications in the evolutionary sequence of anatomical characters leading to birds, including the origin of flight, are also considered in light of this new phylogenetic hypothesis. 410 0$aSpringerBriefs in Earth System Sciences,$x2191-589X 606 $aPaleontology  606 $aAnimal systematics 606 $aAnimal taxonomy 606 $aEvolutionary biology 606 $aAnimal anatomy 606 $aPaleontology$3https://scigraph.springernature.com/ontologies/product-market-codes/G39000 606 $aAnimal Systematics/Taxonomy/Biogeography$3https://scigraph.springernature.com/ontologies/product-market-codes/L2504X 606 $aEvolutionary Biology$3https://scigraph.springernature.com/ontologies/product-market-codes/L21001 606 $aAnimal Anatomy / Morphology / Histology$3https://scigraph.springernature.com/ontologies/product-market-codes/L25015 615 0$aPaleontology . 615 0$aAnimal systematics. 615 0$aAnimal taxonomy. 615 0$aEvolutionary biology. 615 0$aAnimal anatomy. 615 14$aPaleontology. 615 24$aAnimal Systematics/Taxonomy/Biogeography. 615 24$aEvolutionary Biology. 615 24$aAnimal Anatomy / Morphology / Histology. 676 $a598.138 700 $aAgnolin$b Federico$4aut$4http://id.loc.gov/vocabulary/relators/aut$01063406 702 $aNovas$b Fernando E$4aut$4http://id.loc.gov/vocabulary/relators/aut 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910437948603321 996 $aAvian Ancestors$92532121 997 $aUNINA