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1. Data from: Rates of speciation and morphological evolution are correlated across the largest vertebrate radiation
2019. Rabosky, Daniel L., Santini, Francesco, Eastman, Jonathan, Smtih, Stephen A., Sidlauskas, Brian, Chang, Jonathan, and Alfaro, Michael E. Several evolutionary theories predict that rates of morphological change should be positively associated with the rate at which new species arise. ... Nature Communications.