Phylogenetic trees describe the pattern of descent amongst a group of species. With the
rapid accumulation of DNA sequence data, more and more phylogenies are being …

The term 'biodiversity'is a simple contraction of 'biological diversity', and at first sight the
concept is simple too: biodiversity is the sum total of all biotic variation from the level of …

Frogs (Anura) are one of the most diverse groups of vertebrates and comprise nearly 90% of
living amphibian species. Their worldwide distribution and diverse biology make them well …

In phylogenetics, the unrooted model of phylogeny and the strict molecular clock model are
two extremes of a continuum. Despite their dominance in phylogenetic inference, it is …

Theory predicts low niche differentiation between species over evolutionary time scales, but
little empirical evidence is available. Reciprocal geographic predictions based on ecological …

Rates of molecular evolution vary widely between lineages, but quantification of how rates
change has proven difficult. Recently proposed estimation procedures have mainly adopted …

A timescale is necessary for estimating rates of molecular and morphological change in
organisms and for interpreting patterns of macroevolution and biogeography …

The field of molecular evolution has experienced explosive growth in recent years due to the
rapid accumulation of genetic sequence data, continuous improvements to computer …

Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are
fundamental to nearly every evolutionary model and process. Rates need dates. There is …

The estimation of phylogenetic divergence times from sequence data is an important
component of many molecular evolutionary studies. There is now a general appreciation …