Department of Geological Sciences, University of California, Bldg. 526, Santa Barbara, CA 93106-9630 United States
Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106 United States
Department of Geological Sciences, University of California, Bldg. 526, Santa Barbara, CA 93106-9630 United States
Division of Geological and Planetary Sciences, California Institute of Technology, MC 170-25, 1200 E. California Blvd., Pasadena, CA 91125 United States