A study conducted between the UPV/EHU-University of the Basque Country and the University of Zaragoza has conducted an in-depth analysis of the dinosaur fossils at La Cantalera-1, one of the Iberian sites belonging to the Lower Cretaceous with the largest number of vertebrates. The structure of the fossilized bone tissue as well as the fossilization processes have been studied. It has been possible to confirm that most of the dinosaurs found at La Cantalera-1 were young individuals.