Stephanoceras. Free standing ammonite on a cut base. A great display piece. Actual weight 2.9kg. Postage included for mainland UK customers. Age: 158 million/inferior Oolite Size: Approx. Measurement from base to top Tall 20cm. Width 23cm. Amms 9.5cm. & 8cm. Location: Sherbourne, Dorset, UK