1. The ammonite sequence in the Agrio Formation (Lower Cretaceous), Neuquén basin, Argentina;Aguirre-Urreta;Geological Magazine,1997
2. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: a Hauterivian Olcostephanus fauna;Aguirre-Urreta;Cretaceous Research,2001
3. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: the Hauterivian genus Holcoptychites;Aguirre-Urreta;Cretaceous Research,2003
4. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: a new heteromorph fauna from the uppermost Agrio Formation;Aguirre-Urreta;Cretaceous Research,2012
5. Lower Cretaceous (Berriasian-Aptian) biostratigraphy of the Neuquén Basin;Aguirre-Urreta,2005