Geological Development of Amazon and Orinoco Basins

Frank P. Wesselingh and Carina Hoorn

in Historical Biogeography of Neotropical Freshwater Fishes

Published by University of California Press

Published in print August 2011 | ISBN: 9780520268685
Published online March 2012 | e-ISBN: 9780520948501 | DOI:
Geological Development of Amazon and Orinoco Basins

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This chapter examines the geological development of the Orinoco and Amazon River basins. It analyzes the evolution of aquatic Amazonian ecosystems from the Late Cretaceous to the Quaternary period and provides and considers the potential impacts on the development of modern Amazonian fish faunas. It provides paleogeographic reconstructions of northern South America from the Oligocene to the Late Miocene based on the geological and paleontological records.

Keywords: geological development; Orinoco River basin; Amazon River basin; Amazonian ecosystems; fish faunas; South America; paleogeographic reconstructions

Chapter.  6201 words.  Illustrated.

Subjects: Aquatic Biology

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