Evolution of Ceratozamia cycads: A proximate-ultimate approach.

@article{MedinaVillarreal2019EvolutionOC,
  title={Evolution of Ceratozamia cycads: A proximate-ultimate approach.},
  author={Anwar Medina-Villarreal and Jorge Gonz{\'a}lez-Astorga and Alejandro Espinosa de los Monteros},
  journal={Molecular phylogenetics and evolution},
  year={2019},
  volume={139},
  pages={
          106530
        }
}
Evidence suggests that past climatic fluctuations affected speciation of extant cycads. However, empirical genetic and morphological evidence explaining patterns and processes of species diversification are scarce. There are some explanations for the origin and evolution of the genus Ceratozamia, but with inconclusive results. To elucidate the evolution of Ceratozamia, we used genetic and phenotypic sources as empirical data, which were applied in a 'proximate-ultimate' framework (ecological… 
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