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nucleoconch. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
From nucleo- + conch.
Noun
nucleoconch (plural nucleoconchs or nucleoconches)
- (zoology) The embryonic shell of a foraminifera, especially the protoconch and deuteroconch of a megalospheric form.
1945, John West Wells, American Old and Middle Tertiary Larger Foraminifera and Corals, page 77:This nucleoconch is less than half the size of that seen in the sections of D. crassa.
1954, Alan Hilder Smout, Lower Tertiary Foraminifera of the Qatar Peninsula, British Museum (Natural History), page 25:A microspheric nucleoconch does not have an obvious deuteroconch, and is followed by a spiral nepionic stage, no matter what the adult chamber arrangement may be.