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Along the southern crystalline border of the Rouergue, the detrital Sandstones-variegated Mudstones Formation and the Dolomitic Formation yields numerous dinosaur footprints from the Earliest Hettangian. Among the 25 sites distributed along the 40km-long transect between Marcillac-Vallon and Saint-Geniez-d’Olt, two of them, Puech de Castres and Le Bouyssou, have yielded abundant ichnites in various...