1. Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire.
2. Department of Biological Sciences, University of Alaska, Fairbanks, Alaska.
3. American Type Culture Collection, Manassas, Virginia.
4. Desert Research Institute, Las Vegas, Nevada.
5. Department of Chemistry & Biochemistry, University of Texas, Austin, Texas.
6. Laboratory of Organic Chemistry, University of Athens, Panepistimiopolis, Athens, Greece.
7. Geophysical Laboratory, Carnegie Institution of Washington, Washington, District of Columbia.