Eoderoceras armatum Sowerby 1815.
Fine large complete specimen. Pyritised. Found way back in the 1980's. To center both sides and showing the characteristic large spines. An absolute 'beauty'.
Jurassic, Upper Sinemurian, Raricostatum Zone.
Stonebarrow, Charmouth, Dorset.
Ammonite : 7.8 cm. diam.
