This is an extremely beautiful two-sided ammonite. It displays extremely bright colours throughout, including different shades of reds, oranges, golds, and greens. This ammonite has great shape and distinct patterns only found in these fossils. This ammonite has all the characteristics of why colourful Canadian ammonites from Alberta are considered precious. This Placenticeras costatum specimen measures 38 cm (15”) across and weighs approximately 3.5 kg.