[1] Univ Calif Santa Barbara, Natl Ctr Ecol Anal & Synth, Santa Barbara, CA 93101 USA
[2] Humboldt Univ, Museum Nat Kunde, D-10115 Berlin, Germany
[3] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA
[4] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA
[5] Univ Erlangen Nurnberg, Geozentrum Nordbayern, D-91054 Erlangen, Germany
[6] Univ S Florida, Dept Geol, Tampa, FL 33620 USA
[7] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
[8] Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA
[9] Univ Georgia, Dept Geol, Athens, GA 30602 USA
[10] Syracuse Univ, Dept Earth Sci, Syracuse, NY 13244 USA
[11] Smithsonian Inst, Dept Paleobiol, Washington, DC 20013 USA
[12] Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 USA
[13] Nat Hist Museum, Dept Palaeontol, London SW7 5BD, England
[14] Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA
[15] Texas A&M Univ, Fac Ecol & Evolutionary Biol, College Stn, TX 77843 USA
[16] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA
[17] Univ Wisconsin, Dept Geol & Geophys, Madison, WI 53706 USA
[18] Univ Aix Marseille 1, Ctr Sedimentol Paleontol, F-13331 Marseille 3, France
[19] Calif State Univ Fullerton, Dept Geol Sci, Fullerton, CA 92834 USA
[20] Hamilton Local Sch Dist, Dept Sci, Columbus, OH 43207 USA
[21] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA
[22] Coll William & Mary, Dept Geol, Williamsburg, VA 23187 USA
[23] Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA
[24] Duke Univ, Dept Biol, Durham, NC 27708 USA
[25] Slovak Acad Sci, Inst Geol, Bratislava 84005 45, Slovakia
[26] Univ N Carolina, Dept Biol & Marine Biol, Wilmington, NC 28403 USA