Blanco, A. & Szabó, M. & Blanco-Lapaz, A. & Marmi, J. (2017)
Late Cretaceous (Maastrichtian) Chondrichthyes and Osteichthyes from northeastern Iberia. Palaeogeography, Palaeoclimatology, Palaeoecology, 465, 278–294
DOI: 10.1016/j.palaeo.2016.10.039
Marmi, J. & Vila, B. & Oms, O. & Galobart, A. & Cappetta, H. (2010)
Oldest records of stingray spines (Chondrichthyes, Myliobatiformes). Journal of Vertebrate Paleontology, 30(3), 970–974
DOI: 10.1080/02724631003758011