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Exceptionally preserved fossils: critical evidence of the history of life, December 8, 2013 https://www.youtube.com/watch?v=V8WEdTbPNnM Derek E.G. Briggs Department of Geology and Geophysics Yale University, and Director, Yale Peabody Museum of Natural History One interesting comment that Dr. Briggs made towards the end was that the Herefordshire Lagerstätte is still unique for soft bodied animals in carbonate concretions in bentonite. He felt that there surely must be additional lagerstätte of this type is just nobody has systematically and specifically looked for them. This seems like a project where fossil hunters, who know of carbonate concretions in bentonite bed(s) could make a contribution to paleontology. A description of the Herefordshire Lagerstätte is at: The Exceptional Silurian Herefordshire Fossil Locality By Marc Srour, June 11, 2012 http://bioteaching.com/the-exceptional-silurian-herefordshire-fossil-locality/ and Siveter, D.J., 2008. The Silurian Herefordshire Konservat-Lagerstätte: a unique window on the evolution of life. Proc. Shropsh. Geol. Soc, 13, pp. 58-61. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.542.3450&rep=rep1&type=pdf http://www.shropshiregeology.org.uk/sgspublications/Proceedings/2008 No_13 009 Siveter Lagerstatte.pdf A related online paper is: Parry, L.A., Smithwick, F., Nordén, K.K., Saitta, E.T., Lozano‐Fernandez, J., Tanner, A.R., Caron, J.B., Edgecombe, G.D., Briggs, D.E. and Vinther, J., 2018. Soft‐Bodied Fossils Are Not Simply Rotten Carcasses–Toward a Holistic Understanding of Exceptional Fossil Preservation. BioEssays, 40(1). https://www.researchgate.net/publication/321379006_Soft-Bodied_Fossils_Are_Not_Simply_Rotten_Carcasses_-_Toward_a_Holistic_Understanding_of_Exceptional_Fossil_Preservation_Exceptional_Fossil_Preservation_Is_Complex_and_Involves_the_Interplay_of_Numero https://www.researchgate.net/profile/Luke_Parry2 Yours, Paul H.