Virtual Field Studies:
Using data collected by Kelley (1989) and Mehrtens (1979) during the course of their research, the next section of the web module uses the background information presented here to examine evolution in Trenton Falls, NY and Chesapeake Bay, MD. These field studies offer you the ability to examine both modes of evolutionary change, with data by Kelley (1989) presenting gradual change data from a genra of Tertiary mollusks (Astarte and Anadara ), and data by Mehrtens presenting a pattern of episodic change (punctuated equilibrium) as seen in 450 million year old colonies of the bryozoa Prasopora. These "virtual" field trips use photographs, outcrop descriptions, videos, drawings and data collection procedures that mimic the procedures used by Mehrtens and Kelley as they collected data for their studies. Through the eyes of a geologist you will learn how to select field sites, how outcrops are examined, and the proper way to identify, collect, and examine fossil data. After the process of collecting data, the field study moves in to the laboratory where the processes involved in the quantification of field data are discussed, along with tutorials that demonstrates how this data can be used in the classroom as authentic examples of evolution in action.
Click on the Home link to return to the root menu, where you can select which virtual field study you would like to explore!
Last modified October 06 2008 02:05 PM