de La Peña, A. (1997)
New evidence of relationships between Stephanodus and Pycnodontiformes [Abstract]. In ARRATIA, G. & SCHULTZE, H.–P. (Eds.): Second International Meeting, Mesozoic Fishes – Systematics and the Fossil Record, Abstracts: 32; Berlin

Astibia, H. & Bardet, N. & Buffetaut, E. & Buscalioni, A.D. & Cappetta, H. & Cavin, L. & Corral, J.C. & Duffaud, S. & Gheerbrant, E. & Lapparent de Broin, F. & Leloeuf, J. & Murelaga, X. & Nuñez Betelu, K. & Ortega, F. & de La Peña, A. & Pereda Suberbiola, X. & Perez Moreno, B. & Rage, J.-C. & Sanz, J.L. & Tong, H. (1996)
Les faunes de vertébrés du Crétacé supérieur de Laño (Bassin Basco-Cantabrique) dix ans de recherches [Abstract]. Congrès APF, Paris: 3

Soler-Gijón, R. & de La Peña, A. (1995)
Fishes from the Late Cretaceous-early Tertiary boundary interval of the Ager Basin, Lerida Province (Spain). Terra Nostra, 1995(4), 73–74