OICC Press Geoconservation Research 2588-7343 4 2 2021 10 19 A Window onto the Eocene (Cenozoic): The Palaeontological Record of the Sobrarbe-Pirineos UNESCO Global Geopark (Huesca, Aragon, Spain) 10.30486/gcr.2021.1912263.1043 EN Jose Ignacio Canudo Grupo Aragosaurus-IUCA. Facultad de Ciencias. Universidad de Zaragoza. 50009 Zaragoza. Spain https://orcid.org/0000-0003-1732-9155 Ainara Badiola Departamento de Geología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Barrio Sarriena, s/n, 48940 Leioa. Spain Anchel Belmonte Sobrarbe-Pirineos UNESCO Global Geopark. Avenida Ordesa 79. 22340 Boltaña. Huesca. Spain Jesús Cardiel Museo Paleontológico de Lamata. 22393 Lamata. Huesca. Spain Gloria Cuenca-Bescos Grupo Aragosaurus-IUCA. Facultad de Ciencias. Universidad de Zaragoza. 50009 Zaragoza. Spain Ester Diaz Berenguer Grupo Aragosaurus-IUCA. Facultad de Ciencias. Universidad de Zaragoza. 50009 Zaragoza. Spain Fernando Ferratges Grupo Aragosaurus-IUCA. Facultad de Ciencias. Universidad de Zaragoza. 50009 Zaragoza. Spain Miguel Moreno Azanza Geobiotec, Dpto. de Ciências da Terra, Universidade Nova de Lisboa, 2829-526, Caparica, Portugal Adan Perez Garcia Grupo de Biología Evolutiva, Facultad de Ciencias, UNED Madrid, Spain Manuel Perez Pueyo Grupo Aragosaurus-IUCA. Facultad de Ciencias. Universidad de Zaragoza. 50009 Zaragoza. Spain Roi Silva Casal Institut de Recerca Geomodels, Universitat de Barcelona, Spain. Samuel Zamora Iranzo Instituto Geológico y Minero de España. Manuel Lasala 44/9B. 50006 Zaragoza. Spain Journal Article 2021 10 19 The Sobrarbe-Pirineos UNESCO Global Geopark, located in the Central Pyrenees, is a region of remarkable geodiversity that includes extensive Eocene fossil-bearing sites and constitutes an important archive of paleobiodiversity. The Sobrarbe-Piri-neos Geopark hosts outcrops of Eocene formations bearing an unusual abundance and diversity of fossils from marine and continental sedimentary environments, making the Sobrarbe-Pirineos Geopark a perfect window for learning about tropi-cal ecosystems of the Eocene of southern Europe. These environments were in part tectonically controlled and offer a unique opportunity to understand how faunas changed in an active area. Here, we outline the main groups of fossils from the Sobrarbe-Pirineos Geopark, including popular examples such as the “Crocodile of Ordesa-Vio” and the sirenian Sobrarbesiren. The Geopark has been a major tool in the geoconservation of Eocene fossils..