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Wentletrap shells have a roundish or oval aperture, but its inner lip is often reduced to strip of callus. The round and horny operculum is paucispiral and fits the aperture tightly. Most of the species in the family are small to minute, although some are larger, and overall the adult shell length in the family varies between 0.6 and 11.7 cm. [ 4 ]
Shells of various species of cowrie; all but one have their anterior ends pointing towards the top of this image. Cowrie or cowry (pl. cowries) is the common name for a group of small to large sea snails in the family Cypraeidae. The term porcelain derives from the old Italian term for the cowrie shell (porcellana) due to their similar appearance.
Hermit crabs inhabiting marine gastropod shells that lived in the Persian Gulf. A group of beachworn sea snail shells that vary in size, form and pattern combination. A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or organism that lives in the sea.
Sand dollar. See text. Sand dollars (also known as sea cookies or snapper biscuits in New Zealand and Brazil, or pansy shells in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Sand dollars can also be called "sand cakes ...
The shells of most species of sea snails are spirally coiled. Some, though, have conical shells, and these are often referred to by the common name of limpets. In one unusual family , the shell of the snail has become two hinged plates closely resembling those of a bivalve; this family is sometimes called the "bivalved gastropods".
Variety of Mollusc shells (gastropods: land snail shells and seashells). Closed and open shells of a marine bivalve, Petricola pholadiformis. A bivalve shell is composed of two hinged valves which are joined by a ligament. Four views of a shell of the land snail Arianta arbustorum The giant clam (Tridacna gigas) is the largest extant species of ...
Orbigny, 1842. Anomia simplex, the common jingle shell, is a typical species of bivalve mollusc in the family of Anomiidae, sharing attributes to blue mussels, American oysters, and bay scallops. [1] Species related to the family of Anomiidae are often noted for their extremely thin, often translucent, paper-like shells. [2]
Rapana bulbosa Rapana bulbosa shell Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Caenogastropoda Order: Neogastropoda Family: Muricidae Genus: Rapana Species: R. bulbosa Binomial name Rapana bulbosa (Solander, 1817) Synonyms Buccinum bulbosum Solander, 1817 Rapana bulbosa is a species of sea snail, a marine gastropod mollusk in the ...