shell fold
Part of carapace behind cephalon [McLaughlin, 1980].
Portion of carapace behind cephalic shield [Moore and McCormick, 1969].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • shell fold — 1. (ARTHROPODA: Crustacea) The part of the carapace behind the cephalon. 2. (MOLLUSCA: Bivalvia) The outer fold of the mantle edge that houses the periostracal glands at its base …   Dictionary of invertebrate zoology

  • fold — n. [A.S. folde, a fold] 1. A doubling or folding. 2. (BRACHIOPODA) A major external elevation of the valve surface, convex in transverse profile and radial from the umbo. 3. a. (MOLLUSCA: Bivalvia) A broad undulation in the shell surface which is …   Dictionary of invertebrate zoology

  • Shell script — This article is about scripting in UNIX like systems. For batch programming in DOS, OS/2 and Windows, see Batch file. For batch programming in Windows PowerShell shell, see Windows PowerShell#Scripting. A shell script is a script written for the… …   Wikipedia

  • fold — Synonyms and related words: KO, alveolation, alveolus, antrum, arena, armpit, assembly, average, bang, bar, barricade, basin, batten, batten down, be ruined, become insolvent, bend, bisect, bolt, bomb, bosom, bowl, break, brethren, bust, button,… …   Moby Thesaurus

  • shell — Synonyms and related words: Eustachian tube, L, R, acting area, aim at, alveolation, alveolus, ante up, antrum, anvil, apron, apron stage, armadillo shell, armature, armor, armor plate, armpit, atom, atomic model, attack, auditory apparatus,… …   Moby Thesaurus

  • Saddle shell — Saddle Sad dle, n. [OE. sadel, AS. sadol; akin to D. zadel, G. sattel, OHG. satal, satul, Icel. s[ o][eth]ull, Dan. & Sw. sadel; cf. Russ. siedlo; all perh. ultimately from the root of E. sit.] 1. A seat for a rider, usually made of leather,… …   The Collaborative International Dictionary of English

  • columellar fold — (MOLLUSCA: Gastropoda) A spiral wound ridge on the columella that projects into the interior of the shell …   Dictionary of invertebrate zoology

  • parietal fold — (MOLLUSCA: Gastropoda) A spiral ridge on the parietal region projecting into the interior of the shell …   Dictionary of invertebrate zoology

  • umbonal fold — (MOLLUSCA: Bivalvia) In pectinoid shells, a ridge originating at the umbo and setting the auricle off from the shell body …   Dictionary of invertebrate zoology

  • periostracal groove — (MOLLUSCA: Bivalvia) The groove between the tentacular fold and the shell fold that houses the periostracal glands …   Dictionary of invertebrate zoology

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