body shell aperture

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• Body whorl — The body whorl in a mollusc shell is the most recently formed whorl of a spiral shell, terminating in the aperture. The size of the body whorl differs greatly according to shell morphology. In shells in which the rate of whorl expansion after… …   Wikipedia

• Aperture (mollusc) — The aperture is the main (or only) opening in the shell of a gastropod or snail. It is where the soft parts of the animal emerge. In some prosobranch gastropods, the aperture is able to be closed, and even completely sealed, with a sort of door… …   Wikipedia

• Shell money — Chinese shell money, 16 8th century BCE. Shell money is a medium of exchange that was once common. It consisted either of whole sea shells or pieces of them which were worked into beads or otherwise artificially shaped. The use of shells in trade …   Wikipedia

• Gastropod shell — [ 1 umbilicus2 parietal callus3 aperture4 columella5 suture6 whorl7 apex] The gastropod shell is a shell which is part of the body of a gastropod or snail. It is an external skeleton or exoskeleton, which serves not only for muscle attachment,… …   Wikipedia

• 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

• Tusk shell — The tusk shells or scaphopods are a class of marine mollusks which vary in size from very small to medium sized. The scientific name of this class is Scaphopoda, meaning shovel footed . These mollusks live on soft substrates offshore (usually not …   Wikipedia

• olive shell — 1. any marine gastropod of the family Olividae, having a polished, highly colored, elongated shell and a large mantle that, when extended, surrounds the shell. 2. the shell itself. [1880 85] * * * ▪ marine snail       any of the marine snails… …   Universalium

• cone shell — any of numerous, chiefly tropical, marine gastropods of the genus Conus, having a smooth, brightly colored, conical shell with a short, flattened spire. Also called cone snail. * * * ▪ marine snail  any of several marine snails of the subclass… …   Universalium

• triton shell — ▪ gastropod family  any of several marine snails constituting the family Cymatiidae (subclass Prosobranchia of the class Gastropoda), in which the shell usually is spired, the body whorl is large, and the aperture in the first whorl of the shell… …   Universalium

• gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… …   Universalium

• Acteonidae — Taxobox name = Acteonidae image width = 250px image caption = Adam s baby bubble, Rictaxis punctostriatus regnum = Animalia phylum = Mollusca classis = Gastropoda subclassis = Orthogastropoda superordo = Heterobranchia ordo = Opisthobranchia… …   Wikipedia