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Decollated :: Decollated (a.) Decapitated; worn or cast off in the process of growth, as the apex of certain univalve shells..

Helicoid :: Helicoid (a.) Spiral; curved, like the spire of a univalve shell..

Univalve :: Univalve (n.) A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs..

Cingulum :: Cingulum (n.) A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells.

Bellerophon :: Bellerophon (n.) A genus of fossil univalve shells, believed to belong to the Heteropoda, peculiar to the Paleozoic age..

Univalvular :: Univalvular (a.) Same as Univalve, a..

Varix :: Varix (n.) One of the prominent ridges or ribs extending across each of the whorls of certain univalve shells.

Univalvia :: Univalvia (n. pl.) Same as Gastropoda.

Labrum :: Labrum (n.) The external margin of the aperture of a shell. See Univalve.

Sutured :: Suture (n.) A seam, or impressed line, as between the segments of a crustacean, or between the whorls of a univalve shell..

Univalved :: Univalved (a.) Having one valve; as, a univalve shell or pericarp..

Boat Shell :: Boat shell () A marine univalve shell of the genus Cymba.

Concho-spiral :: Concho-spiral (n.) A kind of spiral curve found in certain univalve shells.

Whorl :: Whorl (n. & v.) A volution, or turn, of the spire of a univalve shell..

Snowbird :: Snowbird (n.) An arctic finch (Plectrophenax, / Plectrophanes, nivalis) common, in winter, both in Europe and the United States, and often appearing in large flocks during snowstorms. It is partially white, but variously marked with chestnut and brown. Called also snow bunting, snowflake, snowfleck, and snowflight..

Sea Trumpet :: Sea trumpet () Any large marine univalve shell of the genus Triton. See Triton.

Strombite :: Stromb (n.) Any marine univalve mollusk of the genus Strombus and allied genera. See Conch, and Strombus..

Gyration :: Gyration (n.) One of the whorls of a spiral univalve shell.

Fig-shell :: Fig-shell (n.) A marine univalve shell of the genus Pyrula, or Ficula, resembling a fig in form..

Snowdrop :: Snowdrop (n.) A bulbous plant (Galanthus nivalis) bearing white flowers, which often appear while the snow is on the ground. It is cultivated in gardens for its beauty..

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