A famous location for trilobite fossils in the United Kingdom is Wren's Nest, Dudley, in the West Midlands, where "Calymene blumenbachii" is found in the Silurian Wenlock Group. This trilobite is featured on the town's coat of arms and was named the "Dudley Bug" or "Dudley Locust" by quarrymen who once worked the now abandoned limestone quarries. Llandrindod Wells, Powys, Wales, is another famous trilobite location. The well-known "Elrathia kingi" trilobite is found in abundance in the Cambrian Wheeler Shale of Utah.