RT Journal Article T1 Descripción de los primeros rastros asignados a Hadrosauridae (Ornithopoda, Dinosauria) del Maatrichtiense de la Península Ibérica (Areny, Huesca) T1 Description of the first Hadrosaurian (Ornithopoda, Dinosauria) trackways from Iberian Maastrichtian (Areny, Huesca) A1 Barco, J. L. A1 Ardévol, Ll. A1 Canudo, José Ignacio AB In this paper, we described the first hadrosaurian footprints of Iberian Maastrichtian. The new dinosaur tracksite have been found in the uppermost part of Lower Maastrichtian in Areny (south-central Pyrennes,Huesca) in coastal deposits of the Arén Formation. The tracksite Areny I contain 76 footprints identified as two morphotype of Hadrosauridae indet. They have a subredonded ornithopod-like pes characterised by three broad digits with extensive interdigital webs PB Sociedad Geológica de España YR 2001 FD 2001 LK http://hdl.handle.net/10272/9525 UL http://hdl.handle.net/10272/9525 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026