olive shell

olive shell

noun
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.

Origin:
1880–85

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica
Encyclopedia

olive shell

any of the marine snails that constitute the family Olividae (subclass Prosobranchia of the class Gastropoda). Fossils of the genus Oliva are common from the Eocene Epoch (57.8 to 36.6 million years ago) to the present. The shell, which is distinctive and easily recognizable, has a pointed apex and rapidly expands outward to the main body whorl. It is oval in shape, with a long and narrow aperture, and possesses an agatelike sheen and fine markings. Folds are developed on the end of the body whorl in a characteristic pattern

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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