What creature lived in the cameo shell?

The creature that lived in a cameo shell is typically a mollusk, specifically a type of marine bivalve or gastropod. Cameo shells are often made from materials like conch or other types of shells that display contrasting layers, allowing artisans to carve intricate designs. The layers of these shells are created by the growth of the mollusk, which deposits calcium carbonate. Some well-known examples include the conch shell and the nautilus shell, both of which have been used in jewelry and decorative art.