Harpoceras serpentianum Schlotheim.
Pristine perfect specimen on matrix. The old quarry at Byfield was famous for it's beautifully preserved Ammonites. A little 'gem'.
Jurassic, Upper Toarcian, Abnormal Fish & Insect Bed.
Byfield, Northamptonshire.
Ammonite : 3.7 cm diam.
