shell-bearing mollusks

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• shell — I. noun Etymology: Middle English, from Old English sciell; akin to Old English scealu shell, Old Norse skel, Lithuanian skelti to split, Greek skallein to hoe Date: before 12th century 1. a. a hard rigid usually largely calcareous covering or… …   New Collegiate Dictionary

• Mollusc shell — 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 …   Wikipedia

• ark shell — any marine bivalve of the family Arcidae, esp. of the genus Arca, characterized by a heavy shell with a toothed hinge and a deep, boatlike inner surface. [1850 55] * * * ▪ mollusk       any of the species of predominantly marine bivalve mollusks… …   Universalium

• Bulimulidae — Taxobox name = Bulimulidae image width = 230px image caption = Bulimulus alternatus mariae [Binney, W. G., 1878. The terrestrial shell bearing mollusks of the United States and the adjacent territories of North America . Bull. Mus. Comp. Zool.… …   Wikipedia

• Bulimulus — Taxobox name = Bulimulus image width = 230px image caption = Bulimulus dealbatus [Binney, W. G.. 1878. The terrestrial shell bearing mollusks of the United States and the adjacent territories of North America. Bull. Mus. Comp. Zool. (Harvard),… …   Wikipedia

• mollusk — molluskan, molluscan /meuh lus keuhn/, adj., n. mollusklike, adj. /mol euhsk/, n. any invertebrate of the phylum Mollusca, typically having a calcareous shell of one, two, or more pieces that wholly or partly enclose the soft, unsegmented body,… …   Universalium

• Seashell — A seashell, also known as a sea shell, is the common name for a hard, protective outer layer, a shell, or in some cases a test , that was created by a sea creature, a marine organism. The shell is part of the body of a marine animal, in most… …   Wikipedia

• Oyster — For other uses, see Oyster (disambiguation). Crassostrea gigas from the Marennes Oléron basin in France The word oyster is used as a common name for a number of distinct groups of bivalve molluscs which live in marine or brackish habitats. The… …   Wikipedia

• integument — /in teg yeuh meuhnt/, n. 1. a natural covering, as a skin, shell, or rind. 2. any covering, coating, enclosure, etc. [1605 15; < L integumentum a covering. See IN 2, TEGUMENT] Syn. 1. cortex, involucre, involucrum. * * * Covering of the body,… …   Universalium

• geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… …   Universalium

• Laevistrombus canarium — Five views of a shell of the dog conch Scientific classification Kingdom …   Wikipedia