Varieties of paleobiologic experience / Thomas J.M. Schopf -- Approaches to morphologic analysis / David M. Raup -- Approaches to biogeochemistry / J. Robert Dodd and Thomas J.M. Schopf -- Models involving population dynamics / Anthony Hallam -- Punctuated equilibria: an alternative to phyletic gradualism / Niles Eldredge and Stephen Jay Gould -- Models for the evolution of planktonic Foraminifera / Francis G. Stehli, Robert G. Douglas, and Ismail A. Kafescioglu -- Models in phylogeny / Michael t. Ghiselin -- Conceptual models of benthic marine communities / Ralph Gordon Johnson -- Models in biogeography / Daniel Simberloff -- Conceptual models of ecosystem evolution / James W. Valentine