The information that the Catalan paleontological sites provides us, allows us to reconstruct ancient landscapes and study the history of life.

The exceptionally well-preserved archaeological sites, with fossils that allow the observation of unique details, are veritable windows onto the past. This is the case with the Alcover quarry, the quarries of Rúbies and la Cabrua.

The presence of fossilized remains of dinosaurs in sites such as La Cañada, Mas d'Arsís, Blasi and Sant Romà d'Abella has allowed the description of new species of sauropods and hadrosaurs. Notable also are the dinosaur eggs found at Coll de Nargó, one of the most important collections in the world.

In the Catalan Countries, many fossils also have been found that have allowed us to describe new species of mammals. This is the case of archaeological sites such El Bunyol, Els Casots, La Trinxera del Ferrocarril, El Castell de Barberà, Can Ponsic, El Firal and Venta del Moro.

On the other hand, the sites of Can Mata (Hostalets de Pierola) and Can Llobateres (Sabadell), are internationally recognised for their exceptional scientific and historical value. In the description of new mammals, both added to the discovery of new anthropomorphic primates: Pierolapithecus catalaunicus, Anoiapithecus brevirostris and Hispanopithecus laietanus.