EVOLUTION Correction to Supporting Information for “Allopolyploidy, diversification, and the Miocene grassland expansion,” by Matt C. Estep, Michael R. McKain, Dilys Vela Diaz, Jinshun Zhong, John G. Hodge, Trevor R. Hodkinson, Daniel J. Layton, Simon T. Malcomber, Rémy Pasquet, and Elizabeth A. Kellogg, which appeared in issue 42, October 21, 2014, of Proc Natl Acad Sci USA (111:15149–15154; first published October 6, 2014; 10.1073/pnas.1404177111).
The authors note that on page 1 of the supporting information, right column, first full paragraph, lines 19–20, “All five datasets are deposited at Dryad (datadryad.org)” should instead appear as “All five datasets are deposited at Dryad (datadryad.org/resource/doi:10.5061/dryad.5kf38).” The SI has been corrected online.