Phylogenetic tests for evolutionary innovation: the problematic link between key innovations and exceptional diversification.

Abstract excerpt

Evolutionary innovation contributes to the spectacular diversity of species and phenotypes across the tree of life. 'Key innovations' are widely operationalized within evolutionary biology as traits that facilitate increased diversification rates, such that lineages bearing the traits ultimately contain more species than closely related lineages lacking the focal trait. In this article, I briefly review the...

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