Author: Alexander WetmorePublisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Two New Fossil Birds from the Oligocene of South Dakota
Two New Fossil Birds from the Oligocene of South Dakota
Author: Two New Fossil Birds from the Oligocene of South Dakota, by Alexander Wetmore,...
Author: Alexander Wetmore (Frank Alexander.)Publisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Two New Fossil Birds from the Oligocene of South Dakota
Author: Alexander WetmorePublisher:
ISBN:
Category : Science
Languages : en
Pages : 10
Book Description
Paleogene Fossil Birds
Author: Gerald MayrPublisher: Springer Science & Business Media
ISBN: 3540896287
Category : Science
Languages : en
Pages : 261
Book Description
In the present book the Paleogene fossil record of birds is detailed for the first time on a worldwide scale. I have developed the idea for such a project for several years, and think that it is an appropriate moment to present a summary of our c- rent knowledge of the early evolution of modern birds. Meanwhile not only is there a confusing diversity of fossil taxa, but also significant progress has been made concerning an understanding of the higher-level phylogeny of extant birds. Hypotheses which were not considered even a decade ago are now well supported by independent analyses of different data. In several cases these group together morphologically very different avian groups and allow a better understanding of the mosaic character distribution found in Paleogene fossil birds. The book aims at bringing some of this information together, and many of the following data are based on first-hand examination of fossil specimens.
Avian Biology
Author: Donald FarnerPublisher: Elsevier
ISBN: 0323157998
Category : Nature
Languages : en
Pages : 281
Book Description
Avian Biology,Volume VIII assesses selected aspects of avian biology. It is generally the conceptual descendant of Marshall's earlier treatise,“Biology and Comparative Physiology of Birds, but is more than simply a revision of it. This volume consists of two relatively lengthy, diverse chapters that focus on adaptive significance of coloniality in birds and fossil records of birds. In particular, this volume looks into group phenomena related to central place systems, that is, systems in which one or more individuals move to and from a centrally located place in the course of daily activities. It also addresses selective factors that have been suggested to explain why individuals should form colonies rather than disperse within the available foraging space. This book will be useful as a reference material for advanced students and instructors in this field of interest.
Bulletin
Author: Geological Survey Bulletin
Author: The White River Badlands
Author: Rachel C. BentonPublisher: Indiana University Press
ISBN: 0253016088
Category : Science
Languages : en
Pages : 257
Book Description
This guide to the South Dakota region that houses the world’s richest fossil beds does “an excellent job of presenting the current state of knowledge” (Choice). The forbidding Big Badlands in Western South Dakota contain the richest fossil beds in the world. Even today these rocks continue to yield new specimens brought to light by snowmelt and rain washing away soft rock deposited on a floodplain long ago. The quality and quantity of the fossils are superb: most of the species to be found there are known from hundreds of specimens. The fossils in the White River Group (and similar deposits in the American west) preserve the entire late Eocene through the middle Oligocene, roughly 35-30 million years ago and more than thirty million years after non-avian dinosaurs became extinct. The fossils provide a detailed record of a period of abrupt global cooling and what happened to creatures who lived through it. This book is a comprehensive reference to the sediments and fossils of the Big Badlands, and also touches on National Park Service management policies that help protect such significant fossils. Includes photos and illustrations “A worthy successor to the work of O’Harra.” —Journal of Vertebrate Paleontology
Author: