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On Methuselah's Trail: Living Fossils and the Great Extinctions

by Peter Douglas Ward, Steven M Stanley

ISBN 13: 9780716724889

Format: Paperback (212 pages)
Publisher: W.H.Freeman & Co Ltd
Published: 20 Dec 1993

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Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere

by Peter Douglas Ward

ISBN 13: 9780309100618

Format: Hardcover (296 pages)
Publisher: National Academies Press
Published: 26 Sep 2006

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