Diversity
The sedimentary rocks near Saltillo contain an incredible diversity of fossil organisms.
They contain the remains of crocodiles, marine turtles, fish, sharks, crabs, clams, fresh
water snails, insects, ammonites, corals, seaweed, coprolites (fossilized excrement), trunks
of trees, palm fronds, leaves and fruit. The study of these fossils allows us to reconstruct
the environment in which the dinosaurs lived during the Cretaceous Period, a time when this
was the northeast cost of Mexico.
Preserved in these Mexican rocks is one of the greatest stories of humankind's shared heritage
of life on planet Earth. This great paleontological importance makes the mountain ranges of
southeastern Coahuila a geologic monument worthy of protection.
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Big Discoveries: The Dinosaurs of Coahuila
