lamp shell

lamp shell

noun
a mollusklike marine animal; brachiopod.
Also, lampshell.


Origin:
1850–55; so called because its shape was thought to resemble that of an ancient Roman oil lamp

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Collins
World English Dictionary
lamp shell
 
n
another name for a brachiopod
 
[C19: from its likeness in shape to an ancient Roman oil lamp]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Britannica
Encyclopedia

lamp shell

any member of the phylum Brachiopoda, a group of bottom-dwelling marine invertebrates. They are covered by two valves, or shells; one valve covers the dorsal, or top, side; the other covers the ventral, or bottom, side. The valves, of unequal size, are bilaterally symmetrical; i.e., the right and left sides are mirror images of one another. Brachiopods (from the Greek words meaning "arm" and "foot") are commonly known as lamp shells because they resemble early Roman oil lamps.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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