Paleontological site of Cerin

Marchamp, France

The Cerin Lagerstätte is a fossil deposit of the Jura Mountains located in Cerin, a hamlet belonging to the commune of Marchamp in the department of Ain. The site is internationally known for its surprising diversity. The deposits are located in what was a tropical lagoon at the end of the Kimmeridgian age (Late Jurassic). It is dated from the Aulacostephanus pseudomutabilis biozone, whose equivalent in the Mediterranean area is the Aulacostephanus eudoxus biozone, which dates to 153 Ma.

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NatureReserve data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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