lamp shell
noun
1- a marine invertebrate which superficially resembles a bivalve mollusc but has two or more arms of ciliated tentacles (lophophore) that are extended for filter-feeding. Lamp shells are common as fossils鳃足动物。亦称brachiopod.
1.1
- Phylum Brachiopoda: numerous groups in the Palaeozoic era but few surviving to the present day.鳃足门：群生于古生代, 极少存活至今。
词源
mid 19th cent.: from its resemblance to an ancient oil lamp.