1 Fisher, A., Davis, E.E., and Escutia, C. (Eds.), 2000. Proc. ODP, Sci. Results, 168: College Station TX (Ocean Drilling Program).

2 Department of Geological Sciences, University of Missouri, Columbia MO 65211, USA. Correspondence author: UnderwoodM@missouri.edu

3 Earth Sciences Department, University of California, Santa Cruz, Santa Cruz CA 95064, USA.

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