(A, B) Pictures of the calcified-shelly macrofossils of Cloudina - Namacalathus in Ediacaran biostrom from the top of the Miette Group in the Mount Robson area (BC, Canada). Pictures are courtesy of Dr. Jon Husson from the University of Victoria. (C) Microbial mats in Cooking Lake sediments margin (Alberta, Canada). (D, E) Bioturbated sediments (back-filled burrow and elongated open-tunnel network) from Cooking Lake sediments margin. (F) Exemple of well-preserved stromatolite-reefs: large bedding plane displaying numerous stromatolites from the Ediacaran aged-Byng Formation in Jasper National Park (AB, Canada).