One side and the venter of a typically flattened complete adult with test showing the strong primary ribs, the many fine secondaries and the pronounced row of ventral tubercles continuing to the end of the body chamber. The umbilical seam uncoils over the last 1/4 whorl. From Christian Malford, Wiltshire.
Size: 137 mm on a block 154 mm x 135 mm.
Size: 137 mm on a block 154 mm x 135 mm.