Life Science Hour Seminar Series

THIS SEMINAR CANCELED

Name:Kathleen Pigg
Title:Fossil plants from the Eocene Republic flora: pattern and process in the fossil record?
Date:Friday, 6 April 2018
Time:3:00PM
Location:Murie Life Science Bldg, Murie Auditorium.

Abstract:

The Eocene or "Dawn of the Recent" was a time of globally warm climate and major diversification of modern mammals throughout the Northern Hemisphere with large scale migration events between North America, Europe and Asia.  It was also a time when tropical land plants flourished, particularly along coastal areas, as evidenced by palm frond remains, even in Alaska. During this time we also see the earliest evidence for plant families that play a major role in today's temperate deciduous forests of the Northern Hemisphere, such as maples, birches and members of the rose family.  Diverse conifers and hardwood trees including groups that occur only in Asia today, made their first occurrences in the "Okanogan Highlands" of British Columbia and eastern Washington. We study the evolutionary history and biogeography of these groups, but also look at morphological evidence in the fossils that are fingerprints today for such evolutionary processes as dormancy, leaf dimorphism, hybridization and asexual reproduction through bulbils. My seminar will show you the types of evidence we study to address both patterns and inferred processes of 49 million year old plants occurring in lake beds of this region, in particular in the old mining town of Republic, Washington.

About the Speaker:

http://hasbrouck.asu.edu/symbiota/kpigg/wordpress/

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