Dr. Paula Mikkelsen, Associate Director for Science at PRI and its Museum of the Earth, is a lead investigator on the "BivAToL" (Bivalve Assembling the Tree of Live) project. She, along with colleagues from The Field Museum, Harvard University, and other institutions are working to reconstruct the evolutionary origins of the largest animal phylum in the sea and the second largest on the planet — Bivalve Mollusks. For details, please see the BivAToL Website. This project is funded by the National Science Foundation.