A skull fragment of the mosasaurid prognathodon cf. sectorius from the late cretaceous of navarre (Basque-Cantabrian Region)

1. Bardet, N.
2. Suberbiola, X.P.
3. Corral, J.-C.
4. Baceta, J.I.
5. Torres, J.Á.
6. Botantz, B.
7. Martin, G.