Hildoceras bifrons (Bruguière)
Beautiful example of this zonal index species from a ‘classic’ locality on the Yorkshire coast. The ammonite is complete to the very protoconch and to the mouth border. Excellent sutures.
Jurassic : Upper Lias, Toarcian, Whitbian. Bifrons Zone.
Port Mulgrave, Yorkshire Coast.
Specimen : 12 cms. Diam
