DISPARIFICATION BEFORE, DURING, OR AFTER DIVERSIFICATION? TESTING AN EARLY BURST HYPOTHESIS FOR FUNCTIONAL DIVERSITY IN EARLY PALEOZOIC BIVALVES
ZHOU, Sharon, Committee on Evolutionary Biology, University of Chicago, Chicago, IL 60637, COLLINS, Katie S., Natural History Museum, London, United Kingdom, EDIE, Stewart, Smithsonian Institution, National Museum of Natural History, Department of Paleobiology, Washington, DC 20560 and JABLONSKI, David, Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637