Oligocene CO2 Decline Promoted C4 Photosynthesis in Grasses

@article{Christin2008OligoceneCD,
  title={Oligocene CO2 Decline Promoted C4 Photosynthesis in Grasses},
  author={Pascal-Antoine Christin and Guillaume Besnard and Emanuela Samaritani and Melvin R Duvall and Trevor Roland Hodkinson and Vincent Savolainen and Nicolas Salamin},
  journal={Current Biology},
  year={2008},
  volume={18},
  pages={37-43}
}

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