Embryo fossilization is a biological process mediated by microbial biofilms.

  title={Embryo fossilization is a biological process mediated by microbial biofilms.},
  author={Elizabeth C. Raff and Kaila L. Schollaert and David Evan Nelson and Philip C J Donoghue and Ceri-Wyn Thomas and Franziska Turner and Barry D. Stein and Xiping Dong and Stefan Bengtson and Therese Huldtgren and Marco Stampanoni and Yin Chongyu and Rudolf A. Raff},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={105 49},
Fossilized embryos with extraordinary cellular preservation appear in the Late Neoproterozoic and Cambrian, coincident with the appearance of animal body fossils. It has been hypothesized that microbial processes are responsible for preservation and mineralization of organic tissues. However, the actions of microbes in preservation of embryos have not been demonstrated experimentally. Here, we show that bacterial biofilms assemble rapidly in dead marine embryos and form remarkable pseudomorphs… CONTINUE READING


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