First fossil record (Middle Miocene) of the viper shark Trigonognathus Mochizuki and Ohe, 1990, in the Mediterranean realm

1. Herraiz, J.L.
2. Carrillo-Briceño, J.D.
3. Ferrón, H.G.
4. Adnet, S.
5. Botella, H.
6. Martínez-Pérez, C.