págs. 171-178
The Iberian Permian Triassic "Buntsandstein" of the Aragonian branch of the Iberian range (Spain) in the West-European sequence stratigraphical framework: a combined palynological and sedimentological approach
José Bienvenido Díez Ferrer, Sylvie Bourquin, Jean Broutin, José Javier Ferrer Plou
págs. 179-195
págs. 197-200
págs. 201-216
Morphotypes, polymorphism and peristome in the species of the genus Holcophylloceras SPATH, 1927: Hypothesis of the dimorphism in the species Holcophylloceras zignodianum (d'ORBIGNY, 1848)
págs. 217-229
Sébastien Rohais, Sébastien Joannin, Jean-Paul Colin, Jean Pierre Suc, François Guillocheau, Rémi Eschard
págs. 231-243
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