Two excellent new publications shedding light on the complex processes involved in soft-tissue preservation:
A unifying model for Neoproterozoic–Palaeozoic exceptional fossil preservation through pyritization and carbonaceous compression
by James D. Schiffbauer, Shuhai Xiao, Yaoping Cai, Adam F. Wallace, Hong Hua, Jerry Hunter, Huifang Xu, Yongbo Peng & Alan J. Kaufman
Here: http://www.nature.com/ncomms/2014/141217/ncomms6754/full/ncomms6754.html
And,
Microbial ecology and biofilms in the taphonomy of soft tissues
by Rudolf A. Raff, Mary E. Andrews, Ronald L. Pearson, F. Rudolf Turner, Sebastian T. Saur, Daniel C. Thomas, Justin L. Eagan, and Elizabeth C. Raff
Here: http://palaios.geoscienceworld.org/content/29/11/560.abstract?etoc
A unifying model for Neoproterozoic–Palaeozoic exceptional fossil preservation through pyritization and carbonaceous compression
by James D. Schiffbauer, Shuhai Xiao, Yaoping Cai, Adam F. Wallace, Hong Hua, Jerry Hunter, Huifang Xu, Yongbo Peng & Alan J. Kaufman
Here: http://www.nature.com/ncomms/2014/141217/ncomms6754/full/ncomms6754.html
And,
Microbial ecology and biofilms in the taphonomy of soft tissues
by Rudolf A. Raff, Mary E. Andrews, Ronald L. Pearson, F. Rudolf Turner, Sebastian T. Saur, Daniel C. Thomas, Justin L. Eagan, and Elizabeth C. Raff
Here: http://palaios.geoscienceworld.org/content/29/11/560.abstract?etoc