prodissoconch


prodissoconch
n. [L. pro, before; dis, two; concha, shell]
(MOLLUSCA: Bivalvia)
1. The embryonic shell.
2. Early shell secreted by the shell gland of the larva.
3. Later shell secreted by the mantle edge.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • prodissoconch — (ˈ)prō+ noun Etymology: pro (I) + dissoconch : the rudimentary or embryonic shell of a bivalve mollusk * * * prodissoconch see pro 2 1 …   Useful english dictionary

  • prodissoconch — pro·dissoconch …   English syllables

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  • demiprovinculum — n. [Gr. demi, half; pro, before; vinculum, bond] (MOLLUSCA: Bivalvia) One half of the median part of the hinge margin of the prodissoconch; see prodissoconch …   Dictionary of invertebrate zoology

  • Apex (mollusc) — The apex is a word most often used to mean the tip of the spire of the shell of a gastropod. It is the first formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the embryonic shell… …   Wikipedia

  • Pacific oyster — Scientific classification Kingdom: Animalia Phylum …   Wikipedia

  • Protoconch — A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell of some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. The protoconch may sometimes consist of several… …   Wikipedia

  • Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… …   Wikipedia

  • protoconch — n. [Gr. protos, first; konche, shell] (MOLLUSCA: Gastropoda) The embryonic shell of a univalve, indicated by the apical whorls of the adult shell being clearly demarcated from later ones; see prodissoconch …   Dictionary of invertebrate zoology

  • protostracum — n. [Gr. protos, first; ostrakion, a shell] (MOLLUSCA: Bivalvia) 1. In larval forms, the first formed part of a prodissoconch. 2. In oysters, the shell of the D shaped larval stage; straight hinge veliger …   Dictionary of invertebrate zoology


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