A very fine dorsal exoskeleton which is complete apart from the right free-cheek. Each of the 9 thoracic segments has a pair of spines (<22 mm). Spines are also present on the occipital ring and pygidium as well as the genal spines. A superb exhibition item. England, UK.
Size: 26 mm by 17 mm (excl. spines) on block 55 mm x 40 mm.
Size: 26 mm by 17 mm (excl. spines) on block 55 mm x 40 mm.