The authors of the article "The delayed rise of present-day mammals" by Olaf R. P. Bininda-Emonds et al. have identified a bug in the Perl script used to date nodes in the species-level mammalian supertree. The bug affected most of the published dates, causing them to be slightly inflated, particularly in more recent nodes. While the absolute errors are small, 25 dates (all within Chiroptera) changed by more than 10 million years. The errors do not affect the qualitative results or conclusions of the paper. The Supplementary Information, including tree files, has been amended and is available through the original Article's link. An additional file with the amended Article can be accessed at http://www.uni-oldenburg.de/molekularesystematik/ under the "Publikationen/ Publications" link. Hiroki Ishikawa and Glen N. Barber have noted that they failed to recognize that the STING protein is encoded by the same gene as the previously described plasma membrane tetraspanner MPYS. Marcia A. Blackman et al. have corrected the name of Hans-Gerhard Burgert, which was incorrectly listed as Hans Gerhard-Burgert in their article. John Novembre et al. have noted that a related manuscript by Lao et al. arrived at similar conclusions based on partially overlapping data from the POPRES collection. 661 out of 3,192 samples from the POPRES collection were also analyzed by Lao et al. Yusuke Sato et al. have corrected the labeling of Asp 324 in Fig. 3c of their article, which was incorrectly labeled as Glu 324.The authors of the article "The delayed rise of present-day mammals" by Olaf R. P. Bininda-Emonds et al. have identified a bug in the Perl script used to date nodes in the species-level mammalian supertree. The bug affected most of the published dates, causing them to be slightly inflated, particularly in more recent nodes. While the absolute errors are small, 25 dates (all within Chiroptera) changed by more than 10 million years. The errors do not affect the qualitative results or conclusions of the paper. The Supplementary Information, including tree files, has been amended and is available through the original Article's link. An additional file with the amended Article can be accessed at http://www.uni-oldenburg.de/molekularesystematik/ under the "Publikationen/ Publications" link. Hiroki Ishikawa and Glen N. Barber have noted that they failed to recognize that the STING protein is encoded by the same gene as the previously described plasma membrane tetraspanner MPYS. Marcia A. Blackman et al. have corrected the name of Hans-Gerhard Burgert, which was incorrectly listed as Hans Gerhard-Burgert in their article. John Novembre et al. have noted that a related manuscript by Lao et al. arrived at similar conclusions based on partially overlapping data from the POPRES collection. 661 out of 3,192 samples from the POPRES collection were also analyzed by Lao et al. Yusuke Sato et al. have corrected the labeling of Asp 324 in Fig. 3c of their article, which was incorrectly labeled as Glu 324.