South American and Antarctic Continental Cenozoic Birds: Paleobiogeographic Affinities and Disparities by Claudia P. TambussiSouth American and Antarctic Continental Cenozoic Birds: Paleobiogeographic Affinities and Disparities by Claudia P. Tambussi

South American and Antarctic Continental Cenozoic Birds: Paleobiogeographic Affinities and…

byClaudia P. Tambussi, Federico Degrange

Hardcover | December 24, 2012

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Modern birds (Neornithes) are represented by two big lineages, the Palaeognathae (Tinamiformes + Ratitae) and the Neognathae [Galloanserae + Neoaves (Metaves + Coronoaves)]. Both clades sum approximately 10,000 species of which 60% are Passeriformes (the most diverse clade of terrestrial vertebrates). A comparison between the past and the present reveals a complex and hallmarked evolutionary and biogeographic history which would have begun over 65 million years ago. For South America (SA) this includes: (1) the presence of taxa with uncertain affinities and the absence of Passeriformes during the Paleogene; (2) a progressive and accelerated increase of the species starting at the Neogene (Miocene); (3) important extinct lineages (e.g. Phorusrhacidae, Teratornithidae) that migrate to North America after the rising of the Panamá isthmus; (4) groups with major diversification in the Neogene that survives nowadays represented by scarce species endemic of SA (Cariamidae) or that inhabits mainly in the southern hemisphere (Anhingidae); (5) very diverse living groups with scarce (e.g., Passeriformes) or none (e.g., Apodiformes) fossil record in SA, which stem-groups are registered in Europe. Apparently, the changes in diversity of the south American Neornithes have been the result of successive radiation, biogeographic connections with North America and in a minor scale, some extinctions. The opening of the Drake´s passage and the occurrence of the circumpolar Antarctic flow are not sufficient causes to explain the highly disparity between the weddelians penguins (Sphenisciformes) of Antartica and those of the patagonian Atlantic Ocean.
Claudia P. Tambussi has a PhD in Natural Science (Universidad Nacional de La Plata, UNLP) and is Coordinator of La Plata Museum Education Office. She is a Researcher of CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) performing tasks in paleobiology and evolution of South American and Antarctic birds at La Plata Mu...
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Title:South American and Antarctic Continental Cenozoic Birds: Paleobiogeographic Affinities and…Format:HardcoverDimensions:113 pagesPublished:December 24, 2012Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9400754663

ISBN - 13:9789400754669

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Table of Contents

Introduction.- Paleogeograpic background.- Geological settings of the major fossil localities in South America and Antarctica.- The nature of the bird fossil record.- The Paleogene birds of South America.- Eocene birds from Antarctica and their relationships with those of South America.- The Neogene birds of South America.- The dominance of zoophagous birds.- Bioconections of South America and other continents: What is and what is not possible to conclude.