Alcalá, L. et al. 2020. On small quadrupedal ornithopod tracks in Jurassic-Cretaceous transition intertidal deposits (El Castellar, Teruel, Spain). Spanish Journal of Palaeontology. 29, 2 (jul. 2020), 183–190. DOI:https://doi.org/10.7203/sjp.29.2.17800.