Castanera, D. Bádenas Lago, B. Aurell Cardona, M. Canudo Sanagustín, J.I. Gasca, J.M. New ornithopod tracks from the Lower Cretaceous El Castellar Formation (Spain): Implications for track preservation and evolution of ornithopod footprints Palaeogeogr. palaeoclimatol. palaeoecol. 10.1016/j.palaeo.2022.110866 2022 2022