Fossils and a large molecular phylogeny show that the evolution of species richness, generic diversity, and turnover rates are disconnected.

摘要: The magnitude and extent of global change during the Cenozoic is remarkable, yet impacts these changes on biodiversity evolutionary dynamics species diversification remain poorly understood. To investigate this question, we combine paleontological neontological data for angiosperm order Fagales, an ecologically important clade about 1370 trees with exceptional fossil record. We show differences in patterns accumulation generic diversity, richness, turnover rates Fagales. Generic diversity evolved rapidly since Late Cretaceous peaked Eocene or Oligocene. Turnover were high periods extreme climate change, but relatively low when remained stable. Species richness accumulated gradually throughout Cenozoic, possibly at accelerated pace after Middle Miocene. occurred new environments: Quercoids radiating Oligocene subtropical seasonally arid habitats, Casuarinaceae Australian pyrophytic biomes, Betula Neogene holarctic habitats. These radiations counterbalanced by regional extinctions mesic warm-temperate forests. Thus, overall level linked to clades appropriate ecologies exploiting newly available