RT Journal Article T1 Tortugas y sirenios fósiles en el Eoceno marino de Navarra y Cuenca de Jaca T1 Fossil turtles and sirenians from the marine Eocene of Navarre and Jaca Basin A1 Astibia, H. A1 Murelaga, Xabier A1 Payros, Aitor A1 Pereda Suberbiola, Xabier A1 Tosquella Angrill, Josep AB We report several remains of turtles and sirenians from the marine Eocene (Bartonian) of the Pamplona Area (Navarre) and Santa Cilia de Jaca (Huesca), South Pyrenean Basin. Turtles are represented by fragmentary neural plates and sirenians consist of two caudal vertebrae. All this material is not diagnostic and is here referred to as Chelonii indet. and Sirenia indet. respectively. This is the first report of marine tetrapod fossils in the Eocene of Navarre. Current palaeogeographic data suggest that the connexion between the Atlantic and Mediterranean faunal provinces was probably not made across the Pyrenean Gulf, but following the southern area of the Iberian Plate PB Sociedad Geológica de España YR 1998 FD 1998 LK http://hdl.handle.net/10272/10203 UL http://hdl.handle.net/10272/10203 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026