The mollusc (or mollusk) shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca...

purple dye, and sea silk. Their shells have also been used as money in some preindustrial societies. A handful of mollusc species are sometimes considered...

itself. In many species of molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell. In sea slugs there is a...

The gastropod shell is part of the body of a gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical...

is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It...

covering of some animals Mollusc shell Bivalve shell Gastropod shell Shell, of a brachiopod Turtle shell Armadillo shell Electron shell or a principal energy...

whorled growth of a mollusc shell. A spiral configuration of the shell is found in numerous gastropods, but it is also found in shelled cephalopods including...

the study of mollusc shells. Conchology is one aspect of malacology, the study of molluscs; however, malacology is the study of molluscs as whole organisms...

of a class of shelled marine mollusc with worldwide distribution, and are the only class of exclusively infaunal marine molluscs. Shells of species within...

hardened secretion of stony corals and the prominent mollusc shell shared by snails, clams, tusk shells, chitons and nautilus. Some vertebrate animals, such...