1. Neocomian ammonite biostratigraphy of the Andean basin of Argentina and Chile;Aguirre-Urreta;Revista Española de Paleontologı́a,1993
2. Los depósitos tithoneocomianos;Aguirre-Urreta,1996
3. The ammonite sequence in the Agrio Formation (Lower Cretaceous), Neuquén basin, Argentina;Aguirre-Urreta;Geological Magazine,1997
4. Stratigraphic position of Valanginites, Lissonia, and Acantholissonia in the Lower Valanginian (Lower Cretaceous) ammonite sequence of the Neuquén basin, Argentina;Aguirre-Urreta,1999
5. Lower Cretaceous ammonites from the Neuquén basin, Argentina: Viluceras, a new Valanginian subgenus of Olcostephanus;Aguirre-Urreta;Cretaceous Research,1999