Understanding the Paleoecology and Evolution of Cetaceans in the Eastern North Pacific
Author: Nicholas David Pyenson
Publisher:
Published: 2008
Total Pages: 648
ISBN-13:
DOWNLOAD EBOOK →Author: Nicholas David Pyenson
Publisher:
Published: 2008
Total Pages: 648
ISBN-13:
DOWNLOAD EBOOK →Author: J.G.M. Thewissen
Publisher: Springer Science & Business Media
Published: 2013-11-11
Total Pages: 480
ISBN-13: 1489901590
DOWNLOAD EBOOK →Research in whale origins is now in an explosive phase, with a cascade of discoveries adding to our understanding of the evolutionary pattern and a suite of new techniques being applied to address new questions. The objective of this volume is to provide a snapshot of this explosion. The volume paints the scene with a broad brush. Taken together the chapters clearly indicate that cetacean origins is a field that is dynamic, multidisciplinary, and that the end of the explosive phase is not in sight.
Author: Felix G. Marx
Publisher: John Wiley & Sons
Published: 2016-03-29
Total Pages: 336
ISBN-13: 1118561368
DOWNLOAD EBOOK →Cetaceans (whales, dolphins, and porpoises) have fascinated and bewildered humans throughout history. Their mammalian affinities have been long recognized, but exactly which group of terrestrial mammals they descend from has, until recently, remained in the dark. Recent decades have produced a flurry of new fossil cetaceans, extending their fossil history to over 50 million years ago. Along with new insights from genetics and developmental studies, these discoveries have helped to clarify the place of cetaceans among mammals, and enriched our understanding of their unique adaptations for feeding, locomotion and sensory systems. Their continuously improving fossil record and successive transformation into highly specialized marine mammals have made cetaceans a textbook case of evolution - as iconic in its own way as the origin of birds from dinosaurs. This book aims to summarize our current understanding of cetacean evolution for the serious student and interested amateur using photographs, drawings, charts and illustrations.
Author: Annalisa Berta
Publisher:
Published: 2020-03-31
Total Pages: 221
ISBN-13: 0520355520
DOWNLOAD EBOOK →The life and evolutionary times of marine mammals, from giant whales and sea cows that originated 55 million years ago whose ancestors walked on land, to deep diving elephant seals and clam-eating walruses of modern times.
Author: Felix G. Marx
Publisher: John Wiley & Sons
Published: 2016-03-29
Total Pages: 336
ISBN-13: 1118561554
DOWNLOAD EBOOK →Cetaceans (whales, dolphins, and porpoises) have fascinated and bewildered humans throughout history. Their mammalian affinities have been long recognized, but exactly which group of terrestrial mammals they descend from has, until recently, remained in the dark. Recent decades have produced a flurry of new fossil cetaceans, extending their fossil history to over 50 million years ago. Along with new insights from genetics and developmental studies, these discoveries have helped to clarify the place of cetaceans among mammals, and enriched our understanding of their unique adaptations for feeding, locomotion and sensory systems. Their continuously improving fossil record and successive transformation into highly specialized marine mammals have made cetaceans a textbook case of evolution - as iconic in its own way as the origin of birds from dinosaurs. This book aims to summarize our current understanding of cetacean evolution for the serious student and interested amateur using photographs, drawings, charts and illustrations.
Author: Stephen Leatherwood
Publisher:
Published: 1972
Total Pages: 230
ISBN-13:
DOWNLOAD EBOOK →The field guide is designed to assist the layman in identifying the whales, dolphins, and porpoises he sees in the eastern North Pacific, including all the area north of the equator and east of 180 degrees W longitude. The animals described are grouped not by scientific relationships but by simularities in appearance in the field. Photographs of the animals in their natural environment are the main aids to identification. (Author).
Author: Stephen Leatherwood
Publisher: Courier Dover Publications
Published: 1988
Total Pages: 0
ISBN-13: 9780486256511
DOWNLOAD EBOOK →Profusely illustrated layman's guide to over 40 species: blue whale, bottlenose dolphin, Dall's porpoise, many more. Physical description, range, markings. 563 black-and-white photographs. 17 drawings.