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The Boca Roja Formation is a geologic formation located at Huizachal Canyon in Tamaulipas, northeastern Mexico. The formation preserves fossils that were found in rocks dating back to the Cretaceous period. Making the formation one of two formations to contain fossils from the Cretaceous Period.The Cretaceous period was the last period of the age of dinosaurs before they became extinct. The other formation is The Late Campanian El Gallo Foundation. The most important piece of the Boca Roja Formation is it contains the oldest dinosaur remains in all of Mexico.
References
Boca Roja Formation Wikipedia(Text) CC BY-SA