A very fine, complete bilaterally compressed pyriform theca, with the ambulacral in a broad band along the top of the theca and extending about half way down the sides. On the gonal face, the ornamentation of the ad- and abapical thecal plate & ambulacral flooring plates show well and the rhomb LI:R5 shows in excellent detail. The base of the theca shows the stem attachment area 7.5 mm across. Aymestry Limestone, Sedgley, West Midlands, UK.
Size: 33mm by 24mm by 10mm
Size: 33mm by 24mm by 10mm