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The Arén Formation or Arén Sandstone Formation is a geological formation in Arén, Spain whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.
Dinosaurs
Dinosaur eggs, sauropod tracks, indeterminate sauropod remains, theropod tracks, euornithopod tracks, and indeterminate iguanodont remains present in Provincia de Lleida
References
Arén Formation Wikipedia(Text) CC BY-SA