EVOLUTION Correction for “Biological evidence supports an early and complex emergence of the Isthmus of Panama,” by Christine D. Bacon, Daniele Silvestro, Carlos Jaramillo, Brian Tilston Smith, Prosanta Chakrabarty, and Alexandre Antonelli, which appeared in issue 19, May 12, 2015, of Proc Natl Acad Sci USA (112:6110–6115; first published April 27, 2015; 10.1073/pnas.1423853112).
The authors note that the following statement should be added to the Acknowledgments: “Financial support was also provided by National Science Foundation Grant DEB-0841729 (to R. T. Brumfield).”