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Project Noah Nature School
It looks like an empty fossil socket, a place where a fossil used to be. The trace of organism resemble a part of a shell of trilobite, bristle worm or some shellfish. From tip to tip, it measured some 22 to 25 cm,a nd some 4 to 5 cm wide.
Found on mouintain range of Protected Natural reserve of 'Haut Jura', in France.
Spotted on Jun 21, 2015
Submitted on Jun 24, 2015
1 Comment
Interesting ! - polychaete ( bristle worm ) fossil ??