title: Paleoecology. How grasses got the upper hand.
authors.forename: R A
authors.initials: RA
authors.lastname: Kerr
mesh_terms: D001272:Atmosphere; D002245:Carbon Dioxide; D002980:Climate; D017753:Ecosystem; D005580:Fossils; D006166:Guatemala; D008800:Mexico; D010788:Photosynthesis; D006109:Poaceae / Q000254:growth & development* / Q000378:metabolism; D014867:Water
chemical_list: D014867:Water; D002245:Carbon Dioxide