PT - JOURNAL ARTICLE AU - Cracraft, Joel AU - Houde, Peter AU - Ho, Simon Y. W. AU - Mindell, David P. AU - Fjeldså, Jon AU - Lindow, Bent AU - Edwards, Scott V. AU - Rahbek, Carsten AU - Mirarab, Siavash AU - Warnow, Tandy AU - Gilbert, M. Thomas P. AU - Zhang, Guojie AU - Braun, Edward L. AU - Jarvis, Erich D. TI - Response to Comment on “Whole-genome analyses resolve early branches in the tree of life of modern birds” AID - 10.1126/science.aab1578 DP - 2015 Sep 25 TA - Science PG - 1460--1460 VI - 349 IP - 6255 4099 - http://science.sciencemag.org/content/349/6255/1460.2.short 4100 - http://science.sciencemag.org/content/349/6255/1460.2.full SO - Science2015 Sep 25; 349 AB - Mitchell et al. argue that divergence-time estimates for our avian phylogeny were too young because of an “inappropriate” maximum age constraint for the most recent common ancestor of modern birds and that, as a result, most modern bird orders diverged before the Cretaceous-Paleogene mass extinction event 66 million years ago instead of after. However, their interpretations of the fossil record and timetrees are incorrect.