AUTHORS’ NOTE:
Recently and after the submission of this manuscript, a new publication was released putting
firmer age constraints on the deposition of the Mesoproterozoic Ruyang Group and the
overlying Luoyou Group to 1750 to 1400 Ma, older than previously assumed (Lan et al.,
2014). This pushes back the age of our material, and provides the new date for the
appearance of complex eukaryotic morphologies presented here to 1.4 Ga at the latest, not
at 1.2 Ga as initially stated in here.
Lan, Z., Li, X., Chen, Z-Q., Li, Q., Hofmann, A., Zhang, Y., Zhong, Y., Liu, Y., Tang, G., Ling, X.
and Li, J., 2014, Diagenetic xenotime age constraints on the Sanjiaotang Formation, Kluoyu
Group, southern margin of the North China Craton: Implications for regional stratigraphic
correlation and early evolution of eukaryotes: Precambrian Research, v. 251, p. 21-32.