A wholly septate internal mould showing the sutures well on both sides, and the flat sides and venter with cordate shoulders. On one side, damage to the mantle occurred (probably by predation), but about 2/3 of a whorl back from the end and subsequent growth appears in the form of raised feather-like spirals, two thirds of the way up the sides. From Folkstone, Kent.
Size: 53 mm in diameter.
Size: 53 mm in diameter.