Paleontologists from the Institut Català de Paleontologia Miquel Crusafont (ICP) and the Museu de la Conca Dellà (MCD), Albert Prieto-Márquez and Albert Sellés, have described a new dinosaur species named Calvarius rapidus based from a foot bone found in Pallars Jussà (Lleida, Catalonia). It is one of the last dinosaurs that existed before their extinction worldwide. The research has recently been published in Journal of Vertebrate Paleontology.