Benito, Mª Isabel, Matías Reolid, and Cristóbal Viedma. “On the Microstructure, Growth Pattern and Original Porosity of Belemnite Rostra: Insights from Calcitic Jurassic Belemnites”. Journal of Iberian Geology 42, no. 2 (August 4, 2016): 201–226. https://doi.org/10.5209/rev_JIGE.2016.v42.n2.53232.