![](https://sciencepress.mnhn.fr/sites/default/files/periodiques/visuels/grand/bandeau-superieur-palevol-modele-2023_0.jpg)
The bio-accumulation of micro-organisms trapped in Cenomanian amber from Écommoy (Sarthe, France) and Sparnacian amber from the Corbières (Aude, France) is compared. In both cases, a felting of cyanobacteria or actinomycetes is trapped in the periphery of the piece of amber. Many other more or less isolated micro-organisms, including bacteria, mycelian filaments, protists, spores…) can be trapped. Most of the inclusions were embedded in resin under aquatic conditions, at least in very shallow water, in a freshwater (Corbières) or parallic environment (Écommoy).
Amber, micro-organisms, bio-accumulation, trap, taphonomy, France