Brief Communication Arising

Nature 446, E9-E10 (5 April 2007) | doi:10.1038/nature05753; Received 7 January 2007; Accepted 20 February 2007; Published online 4 April 2007

Palaeontology: Undressing and redressing Ediacaran embryos

Shuhai Xiao1, Chuanming Zhou2 & Xunlai Yuan2

Arising from: J. V. Bailey, S. B. Joye, K. M. Kalanetra, B. E. Flood & F. A. Corsetti Nature 445, 198–201 (2007); Bailey et al. reply

Bailey et al.1 propose that the Ediacaran microfossils Megasphaera and Parapandorina, previously interpreted as animal resting eggs and blastula embryos2, represent Thiomargarita-like sulphide-oxidizing bacteria, claiming that this interpretation better explains their abundance and taphonomy. Here we highlight important observations that significantly weaken the authors' conclusions.

  1. Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, USA
  2. State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China

Correspondence to: Shuhai Xiao1 Email:


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