Caus, E.; Tambareau, Y.; Colin, J.-P.; Aguilar, M.; Bernaus, J.-M.; Gomez-Garrido, A.; Brusset, S. Upper Cretaceous Microfauna of the Cárdenas Formation, San Luis Potosí, NE Mexico. Biostratigraphical, Palaeoecological, and Palaeogeographical Significance. revmexcg 2018, 19, 137-144.