Harpoceras falciferum Sowerby.
Perfect complete specimen on matrix. Developed to the center. With two oysters attached. Nice sutures and a complete knife edged keel. Excellent quality for a 'Junction Bed' Harpoceras.
Jurassic, Upper Toarcian, Falciferum Zone, 'Junction Beds'.
Hurcott district near Ilminster, Somerset.
Ammonite : 9 cm. diam.