Introduction / James W. Valentine -- An atlas of Phanerozoic clade diversity diagrams / J. John Sepkoski, Jr. and Michael L. Hulver -- Terrestrial vertebrate diversity: episodes and insights / K. Padian and W.A. Clemens -- Patterns in vascular land plant diversification: an analysis at the species level / Karl J. Niklas, Bruce H. Tiffney and Andrew H. Knoll -- Real and apparent trends in species richness through time / Philip W. Signor, III -- Evolutionary faunas and the distribution of Paleozoic benthic communities in space and time / J. John Sepkoski, Jr. and Arnold I. Miller -- Classes and adaptive variety: the ecology of diversification in marine faunas through the Phanerozoic / Richard K. Bambach -- Phanerozoic tiering in suspension-feeding communities on soft substrata: implications for diversity / William I. Ausich and David J. Bottjer -- Nonequilibrium model of diversification: faunal turnover dynamics / Jennifer A. Kitchell and Timothv R. Carr -- Diversification functions and the rate of taxonomic evolution / Timothy Dane Walker -- Marine regressions and mass extinctions: a test using the modern biota / David Jablonski -- Modeling the biogeographic regulation of evolutionary rates / Karl W. Flessa and Richard H. Thomas -- Testing for adaptive radiation: the Ptychaspid (Trilobita) biomere of the Late Cambrian / Margaret C. Hardy -- Evolutionary patterns of Jurassic and Cretaceous ammonites: an analysis of clade shape / Peter D. Ward and Philip W. Signor III -- Biotic diversity and clade diversity / James W. Valentine