Arén Formation

Arén Formation Stratigraphic range: Maastrichtian
Type	Geological formation
Location
Region	Europe
Country	Spain

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.

Dinosaur eggs, sauropod tracks, indeterminate sauropod remains, theropod tracks, euornithopod tracks, and indeterminate iguanodont remains present in Provincia de Lleida

Ricardoestesia

Indeterminate

Provincia de Lleida

Hypselosaurus

Indeterminate

Provincia de Lleida

Later found to be indeterminate sauropod remains.

Megalosaurus

Indeterminate

Niederosterreich, Austria.

Later found to be indeterminate theropod remains.

Orthomerus