1. Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA
2. Yale Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA
3. Department of Geological Sciences, University of Texas at Austin, Austin, TX 78712, USA
4. Forschungsinstitut Senckenberg, 60325 Frankfurt am Main, Germany
5. Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA