Provides the latest information in dating and correlation of the strata of late middle Eocene through early Oligocene age in North America.

This book places into modern context the information by which North American mammalian paleontologists recognize, divide, calibrate, and discuss intervals of ma

After a decade of new findings and interpretation based on innovative techniques during the 1980s, archaeologists were pretty sure that 38 million years ago the

Donald R. Prothero's science books combine leading research with first-person narratives of discovery, injecting warmth and familiarity into a profession that h

The Geologic Time Scale 2012, winner of a 2012 PROSE Award Honorable Mention for Best Multi-volume Reference in Science from the Association of American Publish