The Oligocene Bridge Creek Flora of the John Day Formation, Oregon
The Oligocene Bridge Creek Flora of the John Day Formation, Oregon

Author: Herbert William Meyer

Publisher:

Published: 1997

Total Pages: 376

ISBN-13:

DOWNLOAD EBOOK

This comprehensive systematic revision of the Bridge Creek flora is based on large collections of megafossil specimens from the John Day and Crooked River basins. The flora was found to be more diverse than previously recognized, with at least 125 species. At least 11 genera are extinct, but the majority are extant members of deciduous forests. The flora was derived from a variety of sources and represents a classic example of the broadleaved deciduous forests that became widespread at mid-latitudes following the Eocene-Oligocene climatic cooling.

The Geobiology and Ecology of Metasequoia
The Geobiology and Ecology of Metasequoia

Author: Ben A. LePage

Publisher: Springer Science & Business Media

Published: 2005-03-30

Total Pages: 466

ISBN-13: 9781402026317

DOWNLOAD EBOOK

The plant fossil record indicates that the genus Metasequoia was widely distributed throughout the Northern Hemisphere from the early Late Cretaceous to the Plio-Pleistocene. Today the genus has shrunk to one species with approximately 5,000 mature individuals in southeastern China’s Xiahoe Valley. This book distills the current understanding of the biology, ecology and physiology of fossil and living Metasequoia, current research directions and problems that remain unresolved.