Reading the description below and your observations in the field, at the coordinates provided, will help you answer the following questions.
According to Fabrice Cordey, researcher at the Paléoenvironnements et paléobiosphère laboratory at the University of Lyon-I, ‘500,000 species of fossils are known to date, and only 0.0002% of the species that have lived since the Cambrian (around 545 million years ago) have been discovered in the form of fossils’ (Sciences & Vie no. 1106).
Fossils (from the Latin fossilis, taken from the Earth) are ‘the debris or imprints of plants or animals, buried in rocky layers predating the current geological period, and which have been preserved there’ (Larousse dictionary).
Fossilisation is a rare process that can take different forms :
The most common fossils are those that have undergone mineralisation, with living tissue gradually being replaced by minerals.
Sources
http://www.cosmovisions.com/fossile.htm
https://www.futura-sciences.com/planete/definitions/paleontologie-fossilisation-1972/
ttp://svt.janzac.free.fr/sixieme/histoirevie/fossiles/Processus%20de%20fossilisation.htm#:~:text=Le%20moule%20interne%20correspond%20%C3%A0,correspond%20%C3%A0%20la%20partie%20concave.&text=Le%20deuxi%C3%A8me%20type%20de%20fossilisation,carapace%20d'origine%20du%20trilobite.
https://www.geosociety.org/GSA/fieldexp/EarthCache/guidelines/home.aspx?tabs=2
*In accordance with geosociety.org guidelines (paragraph 6: « Photo requirements are permitted, but can only be included as an addition to well-developed logging tasks . »)
