Emerging Topics in Life Sciences (2018) https://doi.org/10.1042/ETLS20170160
Throughout the text of the Ahead-of-Print version of this article published online on 29 June 2018, the authors cite the dates 914–850 million years ago (Ma) as representing the time interval between the last common ancestor (LCA) of Metazoa + Choanozoa and the LCA of Metazoa. The authors would like to note that these dates come from Supplementary Table S1 of Dohrmann & Wörheide 2017, and reflect the Ctenophora-sister topology, as opposed to the topology presented in the main text of Dohrmann and Wörheide , where Porifera are sister to the rest of animals, with Ctenophora sister to Cnidaria (i.e. Coelenterata). This latter topology yields an alternative estimate of 906–814 Ma, which is now displayed in the corrected versions of Figures 1 and 3, presented here. A third scenario — Porifera sister to the rest of animals, with Ctenophora sister to Placozoa + Cnidaria + Bilateria — additionally yields the estimate of 925–855 Ma, as reported in Supplementary Table S2 of Dohrmann & Wörheide . Since it remains unclear which of these topologies is correct, these different phylogenetic scenarios, and their varying molecular clock estimates, need to be considered when discussing the chronology of early animal evolution.
In addition, the spelling of ‘Hanson’ has been corrected in the updated version of Figure 2, presented here.