Patterns of species richness reflect the balance between speciation and extinction over the
evolutionary history of life. These processes are influenced by the size and geographical …

Over half of all described species are insects, but until recently our understanding of the
reasons for this diversity was based on very little macroevolutionary evidence. Here I …

Polyploidy, the doubling of genomic content, is a widespread feature, especially among
plants, yet its macroevolutionary impacts are contentious. Traditionally, polyploidy has been …

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Molecular phylogenies contain information about the tempo and mode of species
diversification through time. Because extinction leaves a characteristic signature in the …

The extraordinary diversity of angiosperms is the ultimate outcome of the interplay of
speciation and extinction, which determine the net diversification of different lineages. We …

Evolutionary hypotheses to explain the greater numbers of species in the tropics than the
temperate zone include greater age and area, higher temperature and metabolic rates, and …

The temporal dynamics of species diversity are shaped by variations in the rates of
speciation and extinction, and there is a long history of inferring these rates using first and …

Phylogenetic trees show a remarkable slowdown in the increase of number of lineages
towards the present, a phenomenon which cannot be explained by the standard birth–death …

ISAAC S. WINKLER AND CHARLES MITTER host-plant use. Many of the phylogenies are
based on DNA sequences, while for others the chief evidence is morphology. This database …