Analyzing disparity and rates of morphological evolution with model-based phylogenetic comparative methods

Thomas F. Hansen, Geir Bolstad & Masahito Tsuboi
Understanding variation in rates of evolution and morphological disparity is a goal of macroevolutionary research. In a phylogenetic comparative methods framework, we present three explicit models for linking the rate of evolution of a trait to the state of another evolving trait. This allows testing hypotheses about causal influences on rates of phenotypic evolution with phylogenetic comparative data. We develop a statistical framework for fitting the models with generalized least-squares regression, and use this to...
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